35
The halfway number is (15 + 129) /2 = 144/2 = 72
15
15
It is: 15
26
57
15
12
2626 is.
-12.5
25.5 is the median of these two numbers (the number that exists halfway between these two numbers).
Well, honey, if you wanna find the number smack dab in the middle of -5 and 15, you just average those two bad boys. So, (-5 + 15) / 2 = 5. There you have it, sweet cheeks, 5 is the magic number that's halfway between those two extremes.