Question 4
Evaluate the expression below.
$\frac{51}{1+2}+\frac{51}{1+2+3}+\frac{51}{1+2+3+4}+\frac{51}{1+2+3+4+5}+\cdots+\frac{51}{1+2+3+\cdots+50}$.
$\frac{51}{1+2}+\frac{51}{1+2+3}+\frac{51}{1+2+3+4}+\frac{51}{1+2+3+4+5}+\cdots+\frac{51}{1+2+3+\cdots+50}$.