# Given the first and last term, a = 6, t9 = 24, how do you find the sum of the arithmetic series?

##### 1 Answer

Feb 3, 2016

Formula is

So

So sum is 9(6+24)/2=135

Feb 3, 2016

Formula is

So

So sum is 9(6+24)/2=135

1567 views
around the world

You can reuse this answer

Creative Commons License

Creative Commons License