Question

if a number 573xy is divisible by 90 then the value of x+y is​

Answer 1

Answer:

according to the divisibility rule for 90, the number must end with 0 and sum of numbers must be a multiple of 9.

so y = 0

and 5+7+3 = 15

closest multiple of 9 is 18 so x + 15 = 18; x = 3

therefore, x+y = 3+0 = 3

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