If a = 1 and b = 1, then what is the value of (not a) or b?
0 + 0 = 0
1 + 0 = 1
0 + 1 = 1
1 + 1 = 0

You can eliminate the 4th possible answer because it doesn't defy and specify your question. 1+1=0 will be taught in higher math standards. You can cross out the 1st possible answer because A and B are not given as 0. Your possible answers are the 2nd and the 3rd possible solutions. However, you have an clue on your question. The clue, "Not A", might mean the unknown variable is 0. My guess would probably be the 3rd possible answer.

29. because you will divide each number of months by 12 to find the number of years. which would mean, 5, 12.5, 16, 45, 50, 72.5. which is crazy. anyhow, i think you find the median in the middle. and yea hope your test goes good