Question

How to calculate the mean using only the first term and the last term of a sequence of consecutive integers?

Answer 1

in a sequence of consecutive integers eg : 1,2,3,4,5
1+5=2+4=2(3)
so if the sum of first and last integers is x and u are given with n integers then



$\frac{n \div 2(x)}{n}$
$\frac{x}{2}$