Python Programming Quiz

Quiz on Arithmetic Operators in Python

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Q.1. What is the correct operator for (x^y)?

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Here y is in power of x i.e Exponent. Hence, the Power (Exponent) Operator (**) operators is used

Q.2. What is the answer to this expression, 22 % 3 is?

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Modulus operator gives the remainder after dividing the 1st operand by the 2nd operand. So, 22%3 gives the remainder after dividing 22 by 3, that is, 1.

Q.3. Which one of these is floor division?

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// is the floor division operator. When both of the operands are integer then python chops out the fraction part and gives you the round off value, to get the accurate answer use floor division. For ex, 5/2 = 2.5 but both of the operands are integer so answer of this expression in python is 2. To get the 2 as the answer, we use the floor division operator.

Q.4. The expression int(x) implies that the variable x is converted to integer.

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Typecasting/Explicit type conversion of the data type in Python is done by using the built-in functions like int(), float(), str(), etc. The int() returns an integer from a specified object or converts a number of some base to decimal.

Q.5. Operators with the same precedence are evaluated in which manner?

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Precedence of operators is a collection of rules that determine which operators will be evaluated first in an expression. In Python, operators having same precedence are evaluated from left to right.

Q.6. What is the order of precedence in python?
i) Exponential
ii) Multiplication
iii) Parentheses
iv) Division
v) Addition
vi) Subtraction

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For order of precedence, just remember this PEMDAS-Parentheses> Exponential> Multiplication> Division> Addition> Subtraction.

Q.7. What is the output of the following code
          
            x = 6
            y = 2
            print(x ** y, x // y)

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The Exponent (**) operator performs exponential (power) calculation. so here 6 ** 2 means 6*6 = 36 The // is the Floor Division operator so 6//2=3

Q.8. Which one of the following has the same precedence level?

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“Addition and Subtraction” are at the same precedence level. Similarly, “Multiplication and Division” are at the same precedence level. However, Multiplication and Division operators are at a higher precedence level than Addition and Subtraction operators.

Q.9. What is the output of this expression, 3*1**3?

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First this expression will solve 1**3 because exponential has higher precedence than multiplication, so 1**3 = 1 and 3*1 = 3. Final answer is 3.

Q.10. What is the output of 
          
            print(10 - 4 * 2)

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As (*) precedence is higher than (-) so 4*2 = 8 will be evaluated first and then 10-8 = 2 will be evaluated.

Q.11. What is the output of 
          
            print(2%6)

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Modulus (%) is used to find the remainder if 2 is divided by 6 then the remainder will be 2.

Q.12. What is the output of the expression 
          
            print(-18 // 4)

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In the case of the floor division operator(//), when the result is negative, it is rounded down to the next smallest (big negative) integer.

Q.13. What is the output of 
          
            print(2**4 + (5 + 5)**(1 + 1))

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Here parenthesis () is the highest priority so it executes first and it has left to right associativity. Then ** is used so 16 + 10**2 = 116.

Q.14. What is the value of the expression 100 / 25?

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The result of standard division is always float. Hence, the result of 100/25 is 4.0 whereas the value of 100 // 25 (integer division) is 4.

Q.15. What is the output of 
          
            print(2 ** 3 ** 2)

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We follow left to right evaluation as both operators are same and hence, have same precedence.

Instructions:-

  1. This Quiz is based on Arithmetic Operators in Python
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