Question

34y2 is a multiple of 9, where y is a digit, what is the value of y?​

Answer 1

Answer:

Either 0 or 9.

Step-by-step explanation:

For a number to be a multiple of 9, the sum of its digits must be a multiple of 9. In the given number, if y=0, then 3+4+0+2=9 which is a multiple of 9. Also, if y=9, then 3+4+9+2=18 which is a multiple of 9 too. Hence, y=0 and y=9, both are correct.

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