The average of the first 100 positive integers is-

A. 49.5

B. 50.5

C. 51

D. 100

Answer: Option B

Solution(By Examveda Team)

Required average
$$\eqalign{ & = \left( {\frac{{1 + 2 + 3 + .... + 100}}{{100}}} \right) \cr & = \frac{1}{{100}} \times \frac{{100 \times 101}}{2} \cr & = 50.5 \cr} $$