Question

If the number 1 x 8 is divisible by 3, what is the value of x?​

Answer 1

We know the divisibility rule for 3: 

If the sum of the digits of a number is divisible by 3, then the number is also divisible by 3.

Here, 3+1+5=9 is divisible by 3.

So, the value of x is 1.

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Answer 2

Answer:

The number 1x8 is divides by 3, the value of x=2.7