In the series 2, 6, 18, 54, ...... what will be the 8th term ?
A. 4370
B. 4374
C. 7443
D. 7434
Answer: Option B
Solution (By Examveda Team)
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.
This Question Belongs to Competitive Reasoning >> Series Completion
According to pattern 2×3=6
6×3=18
18×3=54
54×3=162
4374why?