Question

Choose the number that has exactly 3 factors.

• A. 16
• B. 27
• C. 25
• D. 8

Answer 1

The correct option is C

25

The number 8 has four factors - 1, 2, 4 and 8.
The number 27 has four factors - 1, 3, 9 and 27.
The number 25 has three factors - 1, 5 and 25.
The number 16 has five factors - 1, 2,4, 8 and 16.

Hence 25 is the right option.