Answers

2016-07-06T12:48:42+08:00
Use the formula
Sn = n/2 ( a1 + an)
Sn = 6 / 2 ( 6 + 26 )
Sn = 3 ( 32)
Sn = 96
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yes, but how. we haven't discussed it in school yet, our teacher just told us to research it and i did, but I still don't get how.
how do you do it ?
nevermind, I got it.