Question

S=2+4+6+8+…+98+100

help meeee!

Answer 1

2550

Explanation:

S = (n/2) * (first term + last term)

n = (last term - first term) / common difference + 1
n = (100 - 2) / 2 + 1 = 49 + 1 = 50

S = (50/2) * (2 + 100)

= 25 * 102

= 2550