Answer:
See below
Step-by-step explanation:
A number is divisible by 4 if the last two digits are divisible by 4.
A number is divisible by 8 if the last three digits are divisible by 8.
So for the first one, the digit would either be 7 or 1 because 72 is divisible by 4 and 12 is divisible by 4. If you notice, 72-12=60, which is also divisible by 4.
For the second one, the digit would be either 1 or 9 because 112 is divisible by 8 and 192 is divisible by 8. If you notice, 192-112=80 which has an 8 in it!
