Question

If the number 71x2 is divisible by 4, then the smallest value of x is ____​

Answer 1

The Rule for 8:

If the last three digits of a whole number are divisible by 8, then the entire number is divisible by 8.

6x2 should be divisible by 8.

Put x=3 and we see that 632 is divisible by 8 and gives 79 as quotient.