find the sum of all even natural numbers less than 100
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Answered by
24
sum = 1+2+3+...+98+99
use the simple formula , sum = n(n+1)/2
sum = 99×(99+1)/2 = 99×100/2 = 4950
use the simple formula , sum = n(n+1)/2
sum = 99×(99+1)/2 = 99×100/2 = 4950
Answered by
9
n(n+1) is the formula of sum of even number.you can try it. ok
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