The sum of the first n positive integers is..

Question 1 Report

The sum of the first n positive integers is

\frac{1}{2}

(n + 1)

\frac{1}{2}

(n + 1)

n(n - 1)

n(n + 1)

Answer Details

Sn = $\frac{n}{2}$ (a(n - d)d)