Question

what is the formula for sum of even natural number

Answer 1

n(n+1)

hope it helps please tell me if it's wrong

Answer 2

Formula: N(N+1)

How to Find N = (First Even + Last Even)/2 - 1

Example: 2+4+6+ ....... 100

N = (2+100)/2 - 1 = 50

Sum of first 50 positive even integers = (50)(51) = 2550