unit elasticsearch.service entered failed state  February 20, 2019 at 3:37 AM
Hi, I am working on elastic search and suddenly it stopped working with following error: unit elasticsearch.service entered failed state How to resolve this? Thanks ... View Questions/Answers

How to check keras version in anaconda  February 16, 2019 at 8:45 AM
Hi, I have installed anaconda python for machine learning in my computer. Now I want to know which version of keras is installed on my system. What is the command to find out version of keras library installed? How to check keras version in anaconda? Thanks ... View Questions/Answers

How to read from stdin in python  February 16, 2019 at 7:33 AM
Hi, I am writing a program in python which is suppose to take input from user. In Java it was easy, but in Python how i can achieve the same? Thanks ... View Questions/Answers

How to print like printf in python  February 16, 2019 at 4:50 AM
Hi, I am from C background and there used to be printf function. Jow to print like printf in python? The printf function is C/C++ is very useful. So, looking for some line printf in Python language. Thanks ... View Questions/Answers

python print on same line in loop  February 16, 2019 at 3:48 AM
Hi, I have a unique requirement in Python where I have to print data in the same line. When I am using the print() method it is printing new data in next line. So, I want to avoid this and print in the same line. Let's know how to make function in Python to print data in the same ... View Questions/Answers

how to print float with 2 decimals python  February 16, 2019 at 1:55 AM
Hi, I am new to Python programming and trying to print float value on console. I want to print this value with 2 decimals places. How to print float with 2 decimals python? Is there any good website to learn Python programming language with many examples? Thanks... View Questions/Answers

python print dots with printf style  February 16, 2019 at 12:14 AM
Hi, There is printf function in c and c++. How to use same system function python? I want program in python thats print dots with printf style. Thanks ... View Questions/Answers

print without newline in python  February 15, 2019 at 10:47 PM
Hi, I have a Python program in which it prints strings. But the output is coming in new line. But I want the print it in one line. My example: print("I ") print("Love ") print("Python") But the output is coming in new lines. I want t... View Questions/Answers

how to print dot in python without newline  February 15, 2019 at 9:05 PM
Hi, I a debugging python program and I am using following code to print dots: print("................") I want to print pre-defined number of dots for testing purpose. For example in some loop I want to print 10 dots and in other pla... View Questions/Answers

how to define variable in node js  February 12, 2019 at 7:16 AM
Hi, I want to know the correct way to define variable in node js. how to define variable in node js? Thanks ... View Questions/Answers

how to get request url in node js  February 12, 2019 at 5:37 AM
Hi, I want to get the request url in Node js. how to get request url in node js? Thanks ... View Questions/Answers

How to list databases in PostgreSQL  February 7, 2019 at 3:11 AM
Hi, I want to connect to Postgresql database and see all the databases stored in the database. How to list databases in PostgreSQL? ... View Questions/Answers

import colorama ModuleNotFoundError: No module named 'colorama'  February 3, 2019 at 2:47 AM
Hi, I have a python machine learn program which throws following error: import colorama ModuleNotFoundError: No module named 'colorama' How to resolve this? Thanks ... View Questions/Answers

How to Install and Use PostgreSQL on Ubuntu 18.04  January 30, 2019 at 3:09 AM
Hi, I want to install PostgreSQL on Ubuntu 18.04. I have Ubuntu 18.04 desktop installed on my system and need to install it. What are the process of installing PostgreSQL on Ubuntu 18.04 operating system? Thanks ... View Questions/Answers

JavaScript replaceAll function to replacing all occurrences of a string  January 29, 2019 at 9:24 AM
Hi, I am new to JavaScript and there is requirement of replacing all occurrences of a string. How make JavaScript replaceAll function to replacing all occurrences of a string? Thanks ... View Questions/Answers

ModuleNotFoundError: No module named 'keras'  January 20, 2019 at 2:37 AM
Hi, I am using Anaconda python and trying to run a program developed by other team member in my machine. Here its saying ModuleNotFoundError: No module named 'keras'. How to install keras module? Here is full log of error: (tf12) [email protected]:~/t... View Questions/Answers

ModuleNotFoundError: No module named 'pandas'  January 19, 2019 at 9:57 PM
Hi, I have been assigned work on python pandas and there is already written code. Which throws following error: ModuleNotFoundError: No module named 'pandas' More details about the error: Traceback (most recent ... View Questions/Answers

ModuleNotFoundError: No module named 'nltk'  January 19, 2019 at 9:47 PM
Hi, I am working on a NLP project which uses nltk library. When I import nltk import nltk it throws following error: ModuleNotFoundError: No module named 'nltk' Full error stack: Traceback (most re... View Questions/Answers

ModuleNotFoundError: No module named 'gensim'  January 19, 2019 at 8:15 AM
Hi, I am working on a project which involves machine learning and natural language processing. I have to use gensim in a program. When executed my program gives following error: ModuleNotFoundError: No module named 'gensim' Full error details are: ... View Questions/Answers

ModuleNotFoundError: No module named 'sklearn'  January 19, 2019 at 8:04 AM
Hi, I am trying to use sklearn with Python machine learning program. My program gives following error: python 1.py Traceback (most recent call last): File "1.py", line 2, in <module> from sklearn.datasets import fetch_20newsgroups ModuleNotFoundEr... View Questions/Answers

tensorflow 1.12 python version  January 19, 2019 at 7:55 AM
Hi, The latest version of TensorFlow at this moment is TF 1.12. I want to install it on ubuntu and want to learn the version of python to be used. What is tensorflow 1.12 supported python version? Thanks ... View Questions/Answers

install graphviz ubuntu 18.04  January 17, 2019 at 3:49 AM
Hi, How to install graphviz ubuntu 18.04? Thanks ... View Questions/Answers

gremlin 3.3.3 maven dependency  January 16, 2019 at 6:59 AM
Hi, what is gremlin 3.3.3 maven dependency? I want to add it to pom.xml file. ... View Questions/Answers

gremlin 3.3.1 maven dependency  January 16, 2019 at 6:41 AM
Hi, What is gremlin 3.3.1 maven dependency? Thanks ... View Questions/Answers

how to check gremlin version  January 15, 2019 at 11:50 PM
Hi, I am inside gremlin console and want to check the version. How to check gremlin version? thanks ... View Questions/Answers

com google code gson gson 2.8 0  January 15, 2019 at 5:52 AM
Hi, I want to use the class com google code gson gson version 2.8 0. What is maven dependency for com google code gson gson 2.8 0? Thanks ... View Questions/Answers

com google code gson gson 2.8 0  January 15, 2019 at 5:52 AM
Hi, I want to use the class com google code gson gson version 2.8 0. What is maven dependency for com google code gson gson 2.8 0? Thanks ... View Questions/Answers

jsonelement from string  January 15, 2019 at 5:46 AM
Hi, I have to create jsonelement from string in Java. How to do this? Thanks ... View Questions/Answers

How to create ââ?¬Å?Aliasesââ?¬Â? in Apache Tomcat 8 in Java Side  January 8, 2019 at 4:32 AM
Hi All, I have a configuration for Aliases, I want to do this from Java side in Tomcat8 <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> <Context path="/attach... View Questions/Answers

how to install bower with anaconda  January 1, 2019 at 5:33 AM
Hi, I have to install bower with the anaconda python. how to install bower with anaconda? Thanks ... View Questions/Answers

Error mounting VirtualBox shared folders in an Ubuntu guest  January 1, 2019 at 5:29 AM
Hi, I shared windows folder in linux from Oracle virtual box. This folder is coming in Ubuntu but when i click on it it gives following error: You dont have the permissions necessary to view the contents of "sf_share" ubuntu How to solve the permission issue? Thank... View Questions/Answers

pyspark : An error occurred while calling None.org.apache.spark.api.java.JavaSparkContext  December 27, 2018 at 12:57 AM
Hi I am running pyspark code and it was running fine yesterday. Now its giving the error: pyspark : An error occurred while calling None.org.apache.spark.api.java.JavaSparkContext How to resolve this? Here is the full error log: java.l... View Questions/Answers

How to return dictionary keys as a list in Python  December 25, 2018 at 8:56 AM
Hi, I want to access the keys of dictionary as list in Python program. Here is dictionary data: word_dict = {1:"one", 2:"Two", 3:"Three", 4:"Four", 5:"Five", 6:"Six", 7:"Seven", 8:"Eight", 9:"Nine", 10:"Ten"} print(word_dict) ... View Questions/Answers

how to access python dictionary elements  December 25, 2018 at 8:44 AM
Hi, I am new to Python programming and just got project to work on it and complete it quickly. I have a collection object in my program. Now I want to access value of a key from python dictionary object. What is code for accessing elements from Python dictionary? How to ac... View Questions/Answers

pip install beautifulsoup - install beautifulsoup on Ubuntu  December 24, 2018 at 10:27 AM
HI, I want to install beautifulsoup on my Ubuntu desktop operating system. What is the command to install beautifulsoup on Ubuntu 18.04? Thanks ... View Questions/Answers

janusgraph clear graph  December 24, 2018 at 5:24 AM
Hi, I am working on JanusGraph and during developed it is filled with all junk data. I want do clear my graph by deleting all data. How to clear JanusGraph? Thanks ... View Questions/Answers

JanusGraph Supported Databases  December 18, 2018 at 10:07 AM
Hi, I want to choose the backend for JanusGraph to store my graphs. Which all databases are supported by JanusGraph? Thanks ... View Questions/Answers

location of htdocs in ubuntu  December 17, 2018 at 12:25 AM
Hi, I am working on Apache server on Ubuntu 18.04. I am trying to find the directory where html files are saved. What is the location of htdocs in apache on Ubuntu server? Thanks ... View Questions/Answers

How should I start learning Python?  December 16, 2018 at 9:36 PM
Hi, I want to learn PySpark for machine learning projects. But for learning PySpark we have to learn Python first. How should I learn Python myself. I wish to learn Python programming as soon as possible. How should I start learning Python? Thanks ... View Questions/Answers

make: gcc: Command not found ubuntu  December 14, 2018 at 6:18 AM
Hi, I am getting following error while installing a program in Ubuntu. Building native extensions. This could take a while... ERROR: Error installing zombie_writer: ERROR: Failed to build gem native extension. How to resolve this compil... View Questions/Answers

Spring Boot Web Starter 2.1.1 Maven dependency  December 14, 2018 at 4:30 AM
Hi, I want to use Spring Boot Web Starter 2.1.1 in my spring boot application. My application is based on the old version of Spring Boot. Now will use Spring Boot Web Starter 2.1.1 for my project. What is Spring Boot Web Starter 2.1.1 maven dependency? Thanks ... View Questions/Answers

spring boot starter web maven dependency 2.0.0  December 14, 2018 at 3:00 AM
Hi, I want to use spring boot 2.0.0 in my project. So, have to add this dependency in pom.xml file. What is spring boot starter web maven dependency 2.0.0? Thanks ... View Questions/Answers

duplicate filter registration for 'springsecurityfilterchain' spring boot  December 14, 2018 at 12:19 AM
Hi, I have spring boot application and i am deploying the war file on tomcat. Now application does not start and gives: duplicate filter registration for 'springsecurityfilterchain' spring boot Error on the boot time. How to resolve this? Thanks ... View Questions/Answers

springbootservletinitializer cannot be resolved to a type  December 13, 2018 at 6:53 AM
Hi, I have a web application and it is giving following error in eclipse: springbootservletinitializer cannot be resolved to a type What dependency should is Add? Thanks ... View Questions/Answers

gremlin delete all vertices  December 13, 2018 at 5:30 AM
Hi, How to delete all vertices with gremlin query? I am using JanusGraph as Graph Database server. I have to delete all vertices from gremlin cosole. This is required in development machine. What is the command to delete all vertices with gremlin query? Thanks ... View Questions/Answers

janusgraph get vertex id - how to get id of vertex  December 13, 2018 at 4:29 AM
Hi, I want to get the ids of each Vertex. How to get id of vertex? Thanks ... View Questions/Answers

janusgraph find edge with label  December 13, 2018 at 4:19 AM
Hi, I am working on JanusGraph graph server. I want to find all the edges with a particular label. How to find edge with label in janusgraph? Thanks ... View Questions/Answers

Command 'gem' not found, but can be installed with  December 13, 2018 at 2:39 AM
Hi, I am trying to install once software with gem but its giving following error on Ubuntu: Command 'gem' not found, but can be installed with: sudo snap install ruby # version 2.5.3, or sudo apt install ruby See 'snap info ruby' for additional versions. ... View Questions/Answers

Best big data hadoop training in delhi new Delhi for online training  December 9, 2018 at 9:11 PM
Hi, which is best big data hadoop training in delhi new delhi for taking online classes in weekends? I wish to make a career in Big Data and Machine learning field. How I can choose best online training course? Thanks ... View Questions/Answers

how to print spark dataframe data  December 7, 2018 at 5:17 AM
Hi, I have a dataframe in spark and i want to print all the data on console. How it can be done. how to print spark dataframe data? Thanks ... View Questions/Answers

how to retrieve all id in elasticsearch  December 7, 2018 at 4:21 AM
Hi, I am using elasticsearch to store text data and perform search. I want to get all ids in elasticsearch. how to retrieve all id in elasticsearch? Thanks ... View Questions/Answers

how to exit gremlin console  December 5, 2018 at 11:39 PM
Hi, I am working on gremlin and don't know how to exit from the console correctly? What is the command? Thanks ... View Questions/Answers

How to create a dependent drop down list using [Apache POI]  December 3, 2018 at 1:11 AM
Here I am creating one excel template using [Apache POI] in that user can fill data. In that two drop down list are there. Want to create a drop down list that depends on previous cell's drop down. For example: If I select veg category in cell 3, and "rice, curd, milk" items will appear in th... View Questions/Answers

google guava maven dependency  November 28, 2018 at 8:26 PM
Hi, What is google guava maven dependency? Thanks ... View Questions/Answers

should i learn jsp in 2018  November 26, 2018 at 11:59 AM
Hi, I have just completed Java programming after my science graduation. I want to learn JSP and Servlet. Is it worth to learn JSP in 2018? should i learn jsp in 2018? Thanks ... View Questions/Answers

What is SCA - Service Component Architecture  November 24, 2018 at 10:35 AM
Hi, I want to know more about the SCA. What is SCA - Service Component Architecture? What is the use of SCA in application development and how it is implemented? Thanks ... View Questions/Answers

ImportError: No module named pandas - Error in sparkshell  November 22, 2018 at 9:13 AM
Hi, I am new to pyspark and learning it from beginning. I have successfully installed Spark in Ubuntu and now trying to write some program. I am trying to convert pandas array into dataframe but it giving error: ImportError: No module named pandas When try to impor... View Questions/Answers

importing pyspark in python shell  November 22, 2018 at 8:43 AM
Hi, I am learning to develop develop code for Spark in PySpark. Now I have installed Apache Spark but the issue is that its not coming in the python shell. How should I do for importing pyspark in python shell? I am experience Python developer and now looking to use my ski... View Questions/Answers

error  November 15, 2018 at 11:57 PM
java.lang.NullPointerException at com.knkglob.service.LoginServiceImpl.checkLogin(LoginServiceImpl.java:26) at com.knkglob.controller.LoginController.processForm(LoginController.java:58) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAcce... View Questions/Answers

Sql Server like with  November 9, 2018 at 4:27 AM
SELECT username FROM login WHERE CONTAINS(RelatedWords,'""Insurance"""'); How can we handle this ,throwing error like Syntax error near 'Insurance' in the full-text search condition '""Insurance"""'. please help as soon as possible ... View Questions/Answers

hibernate core 5.3 maven dependency  November 5, 2018 at 9:52 AM
Hi, What is hibernate core 5.3 maven dependency? I want to use Hibernate 5.3 in my project. Thanks ... View Questions/Answers

elasticsearch java heap space out of memory  November 2, 2018 at 5:40 AM
Hi, How to set heap size in elasticsearch to overcome java heap space out of memory? Thanks ... View Questions/Answers

maven ogm 5.4.0.final dependency  October 30, 2018 at 8:08 PM
Hi, What is maven OGM? give code for maven ogm 5.4.0.final dependency. Thanks ... View Questions/Answers

mapr drill port number  October 30, 2018 at 1:46 AM
Hi, What is the port number in Mapr for accessing Apache drill? I want to know all the mapr drill port numbers. Thanks ... View Questions/Answers

How to show full column content in a Spark Dataframe  October 30, 2018 at 1:12 AM
Hi, How to show full column content in a Spark Dataframe? The code: results.show(); Shows only few data. What is solution? Thanks ... View Questions/Answers

spring-expression maven dependency  October 29, 2018 at 8:20 PM
Hi, What is maven dependency of latest version of spring-expression? What code should i add to get spring-expression maven dependency in my project? Thanks ... View Questions/Answers

maven dependency for apache poi 4.0.0  October 29, 2018 at 7:54 PM
Hi, I want to know the maven dependency code which I should add into my maven project to include Apache POI 4.0.0 library. What is the maven dependency code for Apache poi 4.0.0? Thanks ... View Questions/Answers

org.apache.spark.SparkException: A master URL must be set in your configuration  October 24, 2018 at 4:29 AM
Hi, I my program following error is thrown: org.apache.spark.SparkException: A master URL must be set in your configuration How to fix it? thanks ... View Questions/Answers

What is Graph Database  October 22, 2018 at 5:20 AM
Hi, What is Graph Database? Thanks ... View Questions/Answers

Hadoop Training  October 21, 2018 at 1:18 AM
Hi, What is Hadoop and when it is used? I want to learn Hadoop by joining any Hadoop Training course online. I am in need of job in Big Data but don't have experience in any of the Hadoop technologies. This is the reason I am looking for Hadoop Training online which will teach me it fast.... View Questions/Answers

Bigdata and Hadoop Training  October 21, 2018 at 12:58 AM
Hi, Which is the best online training classes for Big Data? I want to learn it from expert? Thanks ... View Questions/Answers

java replace dot with comma  October 18, 2018 at 2:26 AM
Hi, How to replace dot with command in Java program? thanks ... View Questions/Answers

gremlin query list all graphs  October 12, 2018 at 4:01 AM
Hi, I am trying Gremlin graph query. How to get all the graphs in one query? Thanks ... View Questions/Answers

Exception in thread  October 11, 2018 at 4:30 AM
Hi, In my code following error is coming: Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONObject I have imported: import org.json.JSONObject; but its not working. <... View Questions/Answers

Janusgraph rdf  October 10, 2018 at 6:25 AM
Hi, How to use Janusgraph as rdf datastore? I have xml rdf file. How to import it into Janusgraph? Thanks ... View Questions/Answers

how to create tar file in ubuntu  October 10, 2018 at 12:19 AM
Hi, I have a directory with many sub directories and files in it. I want to create tar file of the directory so that it can be moved to another computer easily. I am searching for command to do this. What is easy command for this which i can run in terminal. how to create ... View Questions/Answers

how to disable submit button after login in jsp  October 9, 2018 at 12:21 PM
Hi, I have an application and when user logs in welcome page is displayed. When user clicks on the back button in browser it stars displaying login page. How to prevent this? how to disable submit button after login in jsp? Thanks ... View Questions/Answers

Which is the best online course for learning Hadoop  October 5, 2018 at 11:06 PM
Hi, I want to learn Hadoop Big Data platform to become successful developer in this field. I want to learn Hadoop and Big Data from beginning. How anyone can learn Hadoop and Big Data. Which is the best online course for learning Hadoop? Is online courses helps in learning... View Questions/Answers

java 11 lts release date  October 3, 2018 at 1:30 PM
Hi, When Java 11 is going to be released? Is it released? What are the features of JDK 11 and what is LTS version means? Thanks ... View Questions/Answers

download oracle jdk 11 - How to download  October 3, 2018 at 1:03 PM
Hi, Java 11 is released I want to know where to download it for my computer. What is the url to download Oracle Java 11? Thanks ... View Questions/Answers

run command for all files in directory bash  October 3, 2018 at 6:06 AM
Hi, I have a directory with many many files. I want to run for all files in the directory in Linux. How to do this with bash script? How to run command for all files in directory with bash script? I need this example urgently. Thanks ... View Questions/Answers

How to force cp to overwrite without confirmation  October 3, 2018 at 3:29 AM
Hi, I am copying files in ubuntu from one directory to another directory. But I want to replace all the files in the destination directory with new files. How can I use the cp command? How to force cp to overwrite without confirmation? Thanks ... View Questions/Answers

object orientated task  September 30, 2018 at 4:19 PM
Write a class - Student. Student class consists of student data. For this purpose, you must fulfill the following methods (note - fields of the objects should be marked as private). Student class: Constructors: Construct Student object with name and id as parameters. Student(String name, ... View Questions/Answers

Java program  September 30, 2018 at 3:11 PM
Write a java program which reads in a file, whose name is given by the user ,and o perform the following tasks:- � To read data from the file line by line, this represents information about several persons, such as his first name, last name, age, address, and weight. Then fill the data for ... View Questions/Answers

Vehicle parking management  September 28, 2018 at 10:14 AM
Source code for vehicle parking management system in java swing ... View Questions/Answers

Vehicle parking management  September 28, 2018 at 10:13 AM
Source code for vehicle parking management system in java swing ... View Questions/Answers

Vehicle parking management  September 28, 2018 at 10:13 AM
Source code for vehicle parking management system in java swing ... View Questions/Answers

apache commons io 2.6 maven dependency to add to pom.xml  September 26, 2018 at 8:26 PM
Hi, I am going to use few classes to apache commons io package. I want to add apache commons io 2.6 maven dependency libraries into my project. What is the code to add into pom.xml file? Thanks ... View Questions/Answers

how to install wireshark 2.6 2 on ubuntu 16.04  September 26, 2018 at 4:00 AM
Hi, how to install wireshark 2.6 2 on ubuntu 16.04? Thanks ... View Questions/Answers

What are Big Data and its importance in industries?  September 14, 2018 at 9:51 PM
Hi Guys, I want to understand the Big Data as I am beginner in this field. I am just engineering student and going to finish my engineering education next year. I want to make career in Big Data and Data science. Now it is right time for me to start learning Big data so that I can get job... View Questions/Answers

What is Machine Learning and its uses now a days?  September 14, 2018 at 12:03 PM
Hi, I what to know complete details of machine learning and its details. What is Machine Learning and its uses now a days? Thanks ... View Questions/Answers

elasticsearch allow from all  August 28, 2018 at 12:36 AM
Hi, I am in development environment and want to allow the access of ealsticsearch from all the hosts. Program should access elasticsearch allow from all hosts. How to configure elasticsearch to enable access from all hosts? Which configuration file to change and make it wo... View Questions/Answers

I am beginner and want to learn Java fast  August 17, 2018 at 10:41 PM
Hi, I am a beginner in Java and want to learn it quickly. Which is the best tutorials on roseindia.net to learn it fast? Thanks ... View Questions/Answers

please help me in coding this given program  August 16, 2018 at 12:06 PM
consider the below series: 1,2,1,3,2,5,3,7,5,11,8,13,13,17,..... this series is a mixture of 2 series-all the odd terms in this series from a fibonacci series and all the even terms are the prime numbers in ascending order write a program to find the nth term in this series. (i m unable to code t... View Questions/Answers

error getting repository data for epel repository not found centos 7  August 16, 2018 at 6:01 AM
Hi, Can't find repository while installing one of the software using yum because of the error: error getting repository data for epel repository not found My os is centos 7. How to resolve this? Thanks ... View Questions/Answers

how to open notepad using java  August 13, 2018 at 4:46 AM
Hi, how to open notepad using java? I want to open windows notepad from java program. Thanks ... View Questions/Answers

What is the best way to learn Java on my own?  August 3, 2018 at 11:00 AM
Hi, I am new to job market and after completing my graduation searching for better IT job in market. I am interested in making my career in Java software programming. I want to achieve heights in Java programming. During my college days I did many projects in C and C++. Now I wan... View Questions/Answers

how to get file extension in java  August 2, 2018 at 5:52 AM
Hi, I want to get the file extension in Java. how to get file extension in java? Thanks ... View Questions/Answers

How do I learn Java programming in one day from zero?  August 1, 2018 at 12:07 PM
Hi, I am total beginner in Java programming checking if anyone can learn Java quickly. Is there any way of really learning Java in one day? How do I learn Java programming in one day from zero? I am aware of C and C++ programming language. I have used these to make my coll... View Questions/Answers

Which is best JSP tutorial for beginners  July 29, 2018 at 1:17 PM
Hi, I want to learn JSP online for free and searching for best JSP tutorials on the web. Which is best JSP tutorial for beginners? I am finding many examples to practice many examples. Thanks ... View Questions/Answers