Which of the following numbers is divisible by both 3 and 9?

A. 7605

B. 7690

C. 5390

D. 4524

Answer: the answer is A)

Step-by-step explanation:

it is a because 7,605 is the only number that when divided by 3 and or 9 doen't have a decimal as the answer

A. 7605

Step-by-step explanation:

If a number is divisible by 9, it is also divisible by 3.

A number is divisible by 9 if the sum of its digits equals 9 or an integral multiple of 9.

A. 7605

7 + 6 + 0 + 5 = 18 (an integral multiple of 9); divisible by 9.

B. 7690

7 + 6 + 9 + 0 = 22; not divisible by 9

C. 5390

5 + 3 + 9 + 0 = 17; not divisible by 9

B. 4524

4 + 5 + 2 + 4 = 15; not divisible by 9

The only number divisible by 3 and 9 is 7605.