Question

If 21y5 is a multiple of 9 where y is a digit.what is the value of y

Answer 1

heya;(



y=1,


thanks.............

Answer 2

hey mate

ur answer is

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we have 2 + 1 + y + 5  = 9

2 + 1 + y + 5 = Multiples of nine

=> 8 + y = 9 (suppose, because y must be 1 digit)

therefore y= 1 only.

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thank uhh