if21y5 is a multiple of 9
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Step-by-step explanation:
As we know that according to the divisibility rule of 9 is that if the sum of all its no is divisible by 9 then the number is also divisible by 9.
solution- 2+1+y+5=9
8+y=9
y=9-8
y=1
hence the y=1 and the no is 2115
HOPE YOU GOT IT
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