Question 2
Find $\displaystyle\frac1{1+2}+\frac1{1+2+3}+\cdots+\frac1{1+2+\cdots+51}$.
Enter the exact number only; fractions are allowed.
Enter the exact number only; fractions are allowed.
SEAMO 2027 - Paper E - SET 08 - Self-study Question 2
SEAMO · SEAMO 2027 - Paper E - SET 08 - Self-study