You are viewing a single comment's thread. Return to all comments →
Thanks, I had forgotten there's a rule that the sum of a progression is always n*(firstelement+lastelement)/2 . Now things are clear.
Seems like cookies are disabled on this browser, please enable them to open this website
Summing the N series
You are viewing a single comment's thread. Return to all comments →
Thanks, I had forgotten there's a rule that the sum of a progression is always n*(firstelement+lastelement)/2 . Now things are clear.