Question

find 'Y' if the number 21y5 is divisible by 9

Answer 1

Hey friend!!

Here's ur answer..


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According to divisibility rule,
The sum of the numbers should be divisible by 9, then only the number will be divisible by 9.

Given number : 21y5
So, sum = 2 + 1 + y + 5
= 8 + y.

So, value of y = 1.

Hence, sum will be 8 +1 = 9

So, y = 1.


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Hope it may help you..



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