Mettl Coding Fundamentals and Logic 4

Question 1

What is the output of the following code?

for i in range(1, 6):
  if i % 2 == 0:
    print(i, end=' ')

Accepted Answer

2 4

Answer

The loop runs i=1 to 5; only even values (2 and 4) satisfy i%2==0.

Question 2

A variable declared inside a function in most programming languages has _____ scope.

Accepted Answer

Local

Answer

Variables declared inside a function have local scope and are not accessible outside it.

Question 3

Which of the following is an example of a runtime error?

Accepted Answer

Division by zero

Answer

Division by zero is detected only at runtime when the denominator is evaluated as zero.

Question 4

What does the following loop print?

i = 1
while i < 32:
  i *= 2
print(i)

Accepted Answer

32

Answer

i doubles: 1→2→4→8→16→32; the loop exits when i=32, which is then printed.

Question 5

Which principle states that a class should have only one reason to change?

Accepted Answer

Single Responsibility Principle

Answer

The Single Responsibility Principle (SRP) states each class should have exactly one responsibility.

Mettl Practice Test