31y6 is a number is divisible by 9, then y is equal to _____
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A number is divisible by 3 if the sum of its digits is divisible by 3.
18=1+8=9
60=6+0=6
24=4+2=6
Therefore, all are divisible by 3.
So, option D is correct.
18=1+8=9
60=6+0=6
24=4+2=6
Therefore, all are divisible by 3.
So, option D is correct.
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