Find the sum of the following number sequence: #2+4+6+8+10#?
2 Answers
Apr 22, 2016
30
Explanation:
We'll solve this bit by bit:
Apr 22, 2016
Sequences like this, where the numbers are spaced equally, have a quick way to sum up.
Explanation:
Add the first and the last term and divide by
For long sequences this is much faster than just adding.
E.g. adding all numbers from