Question

The sum of first 100 natural numbers is divisible by

• A. $10$
• B. $100$
• C. $50$
• D. All the above

Answer 1

Answer: (D)

All the above
The sum of the $n$ natural numbers =$\frac{n\times (n+1)}{2}$
Here,$n=100$
$\therefore$ Sum=$\frac{100\times (100+1)}{2}$
$=\frac{100\times 101}{2}$
$=5050$
Option is