Question 8 - Sample Paper 2 by Teachoo - Teachoo Sample Paper

What will be the output of the following code:

a = 20

b = 10

if a % b == 0:

  a = a // b

  b = a * b

else:

  a = a * b

  b = a // b

print(a, b)

A) 2 20

B) 20 2

C) 200 10

D) 10 200

Answer:

Answer by student

A) 2 20

Detailed answer by teachoo

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Let’s go through each of the options and see why they are correct or incorrect.

• Option A) 2 20

This is the correct option. To understand why, let’s trace the execution of the code.

The code starts with assigning the values 20 and 10 to the variables a and b respectively.

Then, it checks the condition a % b == 0 , which means if a is divisible by b. In this case, 20 is divisible by 10, so the condition is true.

Therefore, the code executes the statements inside the if block , which are:

a = a // b : This assigns the value of a divided by b using integer division to a. Integer division means that the result is rounded down to the nearest integer. So, a // b is equal to 20 // 10, which is 2. Hence, a becomes 2.

b = a * b : This assigns the value of a multiplied by b to b. So, a * b is equal to 2 * 10, which is 20. Hence, b becomes 20.

Finally, the code prints the values of a and b, which are 2 and 20 respectively. So, the output is 2 20.

• Option B) 20 2

This is incorrect . This would be the output if the condition was false and the code executed the else block instead of the if block.

• Option C) 200 10

This is incorrect . This would be the output if the code executed both the if and else blocks, which is not possible.

• Option D) 10 200

This is incorrect . This would be the output if the code swapped the values of a and b before executing the if block.

So, the correct answer is A) 2 20.

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