if 21a5 is multiple of 9 .then find the value of a?
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The no. having the sum that is divisible by 9 is the no. divisible by 9.
If 2+1+5=8 then a= 1 because if 2+1+5+8=9 which is divisible by 9
If 2+1+5=8 then a= 1 because if 2+1+5+8=9 which is divisible by 9
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