Question

If a number 573 xy is divided by 90 then what is the value of x + y

Answer 1

if 573xy is divisible by 90 then
y= 0


and (5+7+3+X+y) must be divisible by 9
so 15+x must be divisible by 9

so X will be 3 as 15+3= 18 is divisible by 9






$\bold{\red{x + y = 3}}$
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