u/fool_on_227

Many moons ago, when I was in elementary school; I would get bored and add the numbers on my calculator.

One day I wanted to find the sum of all the numbers from through 100, and so I added them one by one. But then I thought "there's gotta be an easier way to do this" and stumbled upon a formula.

If you multiply the final number in the sequence by it's half and .5, you get the sum.So for example 1 through 10 would be 10x5.5, resulting in 55.

My question is, is this a known (albeit somewhat useless) formula in the world of math, and if so what's its name?

Drift on by sweet melody, don't tarry for too long

If I knew your every word, my lips would sing your song

​

I'm tangled in a memory of what I think should be

I feel as if each moment past, was only meant for me

​

So I'll dance in the moonlight, caught in her cold embrace

The sun that burns, moves far too fast & I can't keep its pace

​

​

https://www.reddit.com/r/OCPoetry/s/Rif0CjXf88

https://www.reddit.com/r/OCPoetry/s/ZLnkW4RLLJ