Question

PLEASE HELP ME ........................​

Answer 1

Step-by-step explanation:

(a) 38721

3+8+7+2+1 = 21

21÷3, 38721 is divisible by 3

21 does not divides 9, 38721 is not divisible by 9

(b) 422679

4+2+2+6+7+9 = 30

30÷3, 422679 is divisible by 3.

but 30 does not divides 9, 422679 is not divisible by 9.

(c) 6110586

6+1+1+0+5+8+6 = 27

27÷3 and 27÷9,

so 6110586 is divisible by 3 and 9

(d) 257796

2+5+7+7+9+6 = 36

36÷3 and 36÷9,

so 257796 is divisible by 3 and 9

thus (a) and (b) are divisible by 3 but not by 9