Question

If 213x52 is divisible by 9 then x is equal to

Answer 1

To be divisible by 9 then total sum of digits should be divisible by 9

In thus case

2+1+3 +5+2 = 13----(1)

since nearest number divisible by 9 is 18

therefore 5 must be added to equation 1

therefore x =5

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