Answers

2016-07-15T15:44:54+08:00
Tn=t x r^(n-1)
81=16 x r^(5-1)
81/16=r^4
r=3/2
16, 24, 36, 54, 81
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2016-07-15T17:26:38+08:00
16, 24, 36, 54, 81 are the answer
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