There are two boxes with a ? on them. You need to figure the number on these boxes.
For the left:
Notice that if you subtract the right most number on the bottom from the right most number above it you get the number just left to the bottom number. So:
15-12=3
similarly, if you apply the same logic moving to the left then:
9-3=6.
So for the top box the number will be:
?-15=9
therefore ?=15+9=24.
For the right:
Here you have to appy similar logic to the left one. The difference is that instead of subtracting you will have to add the numbers. So:
13+0=13
Similarly, 43+13=56
So for the top box the number will be:
?+13=43
therefore ?=43-13=30.
