Question

If 21Y8 a multiple of 9 then find y

Answer 1

Answer:

2178

Step-by-step explanation:

2178 is divided by 9.so,y=7

Answer 2

Answer:

2 + 1 + y + 8 = 18

11 + y = 18

y = 18 - 11

y = 7

so ,2178 is multiple of 9