Question

What are the prime factor of 625 a. 25.25 b.1,5,5,5,5 c.5,5,25 d.5,5,5,5

Answer 1

d.5,5,5,5. A prime number is a number only divisible by 1 and itself. 1 is not a prime number.

Answer 2

       625
         ∧
  25   ×   25
   ∧          ∧
5 × 5 × 5 × 5

The answer is D.