Question and Answer of Computer class -7th For TGES

 Class:- 7th  Computer

 Lesson 8 ( Working With Python) 

Page  No- 127 exercise 

What  will be the output of the following ?

1.     a= input("20 ") =                                              20 10 

2.    s=input(" Enter your name") =                     Enter your name Gopal Sir

3.    x = float(input ( " enter your salary " ))         enter your salary 40000.58         

4.   z=int (input ("20" +"30 " ) )                         20  30  50    

5.    y= int(input(44*3))                                        13243

Which is bold text or digit these are  given by user 

PAGE- 131 Exercise 

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Hardwords:- 

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       Very Short question and Answer . 

   Q.1         Why do we use  "int" and "float"  Data Type in Python ?

    Ans:-     Data type 'int' and 'float' are used to take input of numeric values .

    Q.2         What is the use of precedence of  operators ?

    Ans:-    Precedence of operators refers to the order in which the operators are evaluated.

    Q.3         What are logical operators ?

    Ans:-       These operators are used when you want to compare two or more relational expressions. 

    Q.4        What is string in Python ?

    Ans:-       String is the text value which is used to put anything in text format.  

    Q.5        What is the use of Concatenation operators (+)  ?

    Ans:-        It is used to join two stings . Like a=("20" + "30 )   print( a)  so   output is 20 30             

                          

        Long Question /Answer 

Q.1    Explain the Operator .

Ans:-      Operators are symbols that represent arithmetic and logical operations on operands and provide a meaningful result. If we use some numbers like 45 , +35 , -23 , 23*3 . Hear the number 45 , 35,23 is the operands and whereas the symbols +, -  and * is called operators. 

Q.2 What is the difference between relational and assignment operators ?

Ans:-  Relational Operators:- They are used for depicting the relationship between operands. These operators compare two value, and determine the result in Boolean expression , which can be either True or False. 

Assignment Operators :-  The assignment operators (=) is used for assigning the value of an expression to a variable . The value is assigned on the right side of the various written on the left of it. example:- a=10, B=40 and so on. 

Q.3    In string manipulation , what is the use of "*" operator ?

Ans:-   In string manipulation we use (*) operators for replicating a given string a numbers of times. It is also known as replication operator. 

Example :- If we enter a string ( Ram) , 

                    a= Ram 

                    print( a) 

                                        output - : Ram

after string manipulation:- 

                a=Ram    

                print(a*3) 

                                   output:- RamRamRam 

Q.4        What is the Input ( ) function ?            (question is replaced)  

Ans:-     The input function allows programmers to take the input from the users . The use of this function make the program user interactive . 

The input( ) function take stings only. If you enter a numeric value in input( ) function.

    Example :- a= input (" enter your name :-  " ) 

                    print(a) 

                                            Output :- enter your name -: Gopal Sir 

Q.5       What is PEDMAS ?

Ans:-    PEDMAS is used to extend or expand of  BODMAS  . The PEDMAS means  is "Parenthesis , Exponents , Division, Multiplication , Addition and Subtraction" but BODMAS  means is  " Brackets of Division, Multiplication , Addition and Subtraction) . So we use PEDMAS in python. 

 

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