You said that you want to practice summation problems! Didn't you?
Calculus
Level
3
\[\Large \displaystyle \lim_{n \to \infty} \sum^{n}_{m=1} \left[3 \left(1+\dfrac{m}{n}\right)^{2}\dfrac{1}{n} \right]= \ ? \ \]
by
Akshat Sharda