Math question! help!!!!!?

Question

Find the sum of the first 20 terms of an arithmetic series where a=5 and t20=125

help

Answer 1

Okay, (1) you can count and (2) you know your alphabet.

This should be all you need to figure this out on your own - that and imagine how good you will feel doing it on your own!

Hope this helps!

IMHO,

The Ol' Sasquatch Ü