AP

MATHEMATICS · Single correct · AP · Calculus AB · Integration and Accumulation of Change · Integration and Accumulation of Change

Problem

\displaystyle\lim_{n\to\infty}\sum_{r=1}^{n}\dfrac{r}{n^2+n+r}

equals (1)

0

(2)

\dfrac13

(3)

\dfrac12

(4)

1