Question

Find the smallest prime number multiplied to 72 to obtain a perfect square number.

• A. 2
• B. 3
• C. None of the above
• D. 5

Answer 1

The correct option is A 2

Let's express 72 into its prime factors
72 = 2 × 2 × 2 × 3 × 3
Now, so you can see if we multiply 2 with 72, we will get 144, whihc is a perfect square.