Some Questions and Answers using Lists in Python.
User_name=input('Enter your name,User:') #Welcoming Statement
print("Welcome dear "+User_name+"\n\n1.Please guess the following patterns and check their answers below.")
Question_1=['_','25','125','625'] #Question1
print(Question_1)
Question_2=['7','21','35','49','_','77','91','_','119']
print(Question_2) #Question2
Question_3=['10','90','170','250']
print(Question_3) #Question3
input("Press 'Enter' key to see the answer.")
print("\nAns.The answers are as follows:-")
Question_1.remove("_")
Question_1.insert(0,'5') #Answer for question1
print(Question_1)
Question_2.remove("_")
Question_2.remove("_")
Question_2.insert(4,'63')
Question_2.insert(7,'105')
print(Question_2) #Answer for question2
Question_3.append(330)
print(Question_3) #Answer for question3
input("Press 'Enter' key to go for 2nd Question.")
print("\n\n2.Change the gender in the following sentences:-")
Sentence_1=['A','boy','is','eating','his','apple.'] #Sentence1
print(Sentence_1)
Sentence_2=['An','apple','is','eaten','by','him.'] #Sentence2
print(Sentence_2)
Sentence_3=['An','apple','was','given','to','him','by','his','father.'] #Sentence3
print(Sentence_3)
input("Press 'Enter' key to see the answer.")
print("\n\nAns.The answers are as follows:-")
##(Sentence_1.pop(1))
##(Sentence_1.pop(4)) #Correct method but can confuse the programmer while editing again.
##(Sentence_1.insert(1,'girl')) #Because popping index once change evryone's index and programmer will
##(Sentence_1.insert(4,'her')) find difficulty in popping other indexes after that.
##print(Sentence_1)
(Sentence_1.remove('boy'))
(Sentence_1.remove('his'))
(Sentence_1.insert(1,'girl'))
(Sentence_1.insert(4,'her'))
print(Sentence_1) #Answer for the statement1
(Sentence_2.remove('him.'))
(Sentence_2.insert(5,'her.'))
print(Sentence_2) #Answer for te statement2
(Sentence_3.remove('him'))
(Sentence_3.remove('his'))
(Sentence_3.remove('father.'))
(Sentence_3.insert(5,'her'))
(Sentence_3.insert(7,'her'))
(Sentence_3.insert(8,'mother.'))
print(Sentence_3) #Answer for the statement3
print("\n\n\t\tThank You "+User_name+' for attending this questions.') #Program ends.
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