Question

If 42 *8 is amultiple of 9 then the degit represent by* id

Answer 1

Multiple of 9 means that the numbe is divisible by 9...

Thus we can e divisiblity test of 9 on this number

Divisiblity test of 9 = sum of digits will be divisible by 9...

Thus =>

Let * be x

Then 4 + 2 + x + 8

=> 14 + x

Therefore x has to be 4

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