Question

What is the prime factorization of 90?

Answer 1

2,3,3,5

Explanation:

Using the smallest prime, 2, divide 90. `90/2=45`

The smallest prime will not go into 45, so divide by the next smallest prime, 3. `45/3=15`

But 15 is also divisible by 3, so divide again. `15/3=5`

5 is a prime number, so the prime factors of 90 are... 2x3x3x5