What is the sum of all integers from 60 to 90 inclusive?
The sum of inclusive integers is the Average of inclusive numbers × Count of Inclusive Numbers
Pushing the Average and Count button above, we get the following math:The Inclusive Integer Average formula is below:Plugging the numbers A = 60 and B = 90 into the formula, we get:
A = 75The formula to count the number of integers is below:
Count = B - A + 1Plugging the numbers A = 60 and B = 90 into the formula, we get:
90 - 60 + 1
Count = 31
Therefore, the sum of inclusive integers from 60 to 90 = 75 x 31 = 2325