Knowing, that ( 1+2+3+.....+n={n(n+1)}/{2} ) find ( 1+2+3+......+135= )

Question

asked Apr 24, 2024 161k views

1 Answer

Liberforce · Answer 1 · 2024-04-27T17:07:40+0000

The sum of numbers from 1 to 135 is 9180.

To find the sum of numbers from 1 to n, we can use the formula:

sum = n(n + 1)/2

So, to find the sum from 1 to 135, we substitute n = 135 into the formula:

sum = 135(135 + 1)/2

After simplifying, we get:

sum = 135 * 136 / 2 = 9180