Question

Which of the following is not a factor pair of 36?

• A. 2 and 18
• B. 3 and 12
• C. 6 and 6
• D. 6 and 5

Answer 1

The correct option is D 6 and 5

2 $\times$ 18 = 36
So, 2 and 18 is a factor pair of 36.

3 $\times$ 12 = 36
So, 3 and 12 is a factor pair of 36.

6 $\times$ 6 = 36
So, 6 and 6 is the factor pair of 36.

6 $\times$ 5 = 30
So, 6 and 5 is not a factor pair of 36.

Therefore, 6 and 5 is not a factor pair of 36.