[4374] In the series 2, 6, 18, 54, …… what will be the 8th term ?

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TNPSC G4

10th CBSE Maths

In the series 2, 6, 18, 54, …… what will be the 8th term ?

4370

4374

7443

7434

Explanation:
Clearly, 2 x 3 = 6, 6 x 3 = 18, 18 x 3 = 54,…..So, the series is a G.P. in which a = 2, r = 3.Therefore 8th term = ar8-1 = ar7 = 2 x 37 = (2 x 2187) = 4374.

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In the series 2, 6, 18, 54, …… what will be the 8th term ?	Answer

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