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Number Series Completion
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In the series 2, 6, 18, 54, ...., what will be the 8th term ?

Answer & Solution
Correct Answer: Option B
Clearly, 2 × 3 = 6, 6 × 3 = 18, 18 × 3 = 54,..............
S, the series is a G.P. in which a = 2, r = 3
∴8th term = ar(8 - 1)= ar7 = 2 × 37 = (2 × 2187) = 4374
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