Question

The sum of first 100 natural numbers is divisible by
1) 2, 4 and 8 2) 2 and 4 3) 2 only 4) None of these.​

Answer 1

Answer:

Answer.

The sum of the first 100 natural numbers is n(n+1)/2 . 101 is an odd number and 50 is divisible by 2. Hence, 50 to 101 will be divisible by 2.