Question

If 13y8 is a multiple of 6 , where y is a digit, what are the possible values of y??

Answer 1

For a multiple of 6 , it should also be a multiple of 2 and 3 simultaneously
We see 13y8 is divisble by 2(last digit is even)
For divisibility by 3 , check sum of digits , they should be divisible by 3
Sum = 12 + y
For y = 0,3,6,9 it is divisible
So these are the possible values of y

Answer 2

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