95
If your finding the average with three numbers on etc'90, 105 120' You'll add them together 90+105+120=315 and divide by three. So the average height will be 105
81.25 is the average of those numbers.
90-105 is the average IQ for anyone.
111
90 + 21 = 111
74
90 + 15 = 105
90 percent of 105 is 94.5.
90%-74% = 16%
gcf of 90 and 105 is 15
90+84+65+71+90+74 = 474
I don't know what GMF is, but:GCF (Greatest Common Factor) of 90 and 105 is 15LCM (Lowest Common Multiple) of 90 and 105 is 630