Question

Find the sum of the natural numbers up to 200

Answer 1

20100

Explanation:

Sum of the first n natural numbers is given by the formula:

`S_n = \frac {n(n+1)}{2}`

Plug n = 200, we find:

`S_(200) = \frac {200(200+1)}{2} \\\\</p><p></p><p>\therefore S_(200) =100* 201\\\\</p><p></p><p>\huge \orange {\boxed {\therefore S_(200) =20100}} </p><p>`