Question

If 35 a 6 is divisible by 3 , where a is a digit , what are the possible value of a

Answer 1

The sum of digits of a number divisible by 3 is a multiple of 3

3+5+a+6+4=3n

18+a=3n

If n=6⇒3n=18

If n=9,3n=27

If n=6,7,8,9⇒18+a=18,21,24,27

∴a=0,3,6,9

Answer 2

Answer:

I didn't understand question

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