Question

If n(A X B)=45 , then n(A) cannot be

Answer 1

Answer:

{x:x where x doesn't belong to {1,3,5,15,45}}

Step-by-step explanation:

Factors of 45 are: 1,3,5,15,45

So any number except {1,3,5,15,45} won't be n(A)

Mark me Brainliest