Answers

2015-07-14T20:12:32+08:00
2,6,18,54....find the 4th term...

ratio: 6÷2=3 therefore our ratio is 3..

solution..
formula: an=a1 rⁿ-¹
a4=2(3)⁴-¹
=2(3)³
=2(27)
a4= 54
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