Question

If one number is a multiple of 3 and the other is not, then the sum of these numbers is not a multiple of 3

A. true
B. false

Answer 1

A.True

Explanation:

Multiple of 3 is given by

3,6,9,12,15,18,,,,

Let one number a=6

6 is a multiple of 3.

Another number =5

5 is not a multiple of 3.

Sum of 6 and 5=6+5=11

We know that

11 is not a multiple of 3.

Therefore, if one number is a multiple of 3 and the other is not , then the sum of these number is not a multiple of 3 is true.

Option A is true