What least value must be assigned to '*' so that the number 63576 * 2 is divisible by 8 ?

Answer: Option C

For divisibility by 8, last 3 number should be divisible by 8.
Now, put the value 0, 1 ... 2 ... and check.
When use * = $$\frac{632}{8}$$ = 79
So, hence it is divisible by 8 answer is 3