a) If 6523y5 is exactly divisible by 9, then find the least value of y. Justify your answer.
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As we know if sum of all the digit is divisible by 9 then the value is divisible by 9
so
6+5+2+3+y+5 = 27
21+y = 27
y = 6
Hope it's help you ❤️
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