It is: (15+37)/2 = 26
(2/5 + 8/15) / 2 = 7/15
It is (5 + 10)/2 = 15/2 = 7.5
1 2 3 5 7 11 13 15
2 is a prime number and 15 is a composite number.
Halfway between 10 and 15 is (10 + 15) ÷ 2 = 121/2
The halfway number is (15 + 129) /2 = 144/2 = 72
It is (-15 + 20)/2 = 5/2 = 2.5
It is: (15+61)/2 = 38
It is: (15+37)/2 = 26
The number at the midpoint of these two numbers is (15 + 27)/2 = 21
(2/5 + 8/15) / 2 = 7/15
There cannot be any number between two identical numbers.
because the closest number between these 2 numbers is 15
(10+20)/2 = 30/2 = 15
It is (5 + 10)/2 = 15/2 = 7.5
Then number half way between them is their mean average: (-3/7 + -15/14) ÷ 2 = (-6/14 + -15/14) ÷ 2 = -21/14 ÷ 2= -21/28 = -3/4