Question

if 21y5 is a multiple of 9 , where y is a digit , what might be the smallest value of y ?​

Answer 1

Answer:y=1

Step-by-step explanation:

For a number to be multiple of 9 the sum of all the digits should be divisible by 9

2+1+y+5=8+y

8+y=9

Y=1

Hope you understood.

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