Answers

2016-06-16T23:45:40+08:00
An = a1 + (n-1)d
a27 = 3 + (27-1)3
a27 = 3 + 78
a27 = 81
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2016-06-17T19:48:35+08:00
3,6,9,12,15,18,21,24,27,30,33,36,39,41,44,47,50,51,54,57,60,63,66,69,71,74,77. my ans.

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