Multiple Choice Questions

12 18 36 102 360 ........

Quantitative Aptitude (CGL) Number series

12, 18, 36, 102, 360, (?)

1440

1478

1340

1386

12 × 4 – 30 = 48 – 30 = 18
18 × 4 – 36 = 72 – 36 = 36
36 × 4 – 42 = 144 – 42 = 102
102 × 4 – 48 = 408 – 48 = 360
360 × 4 – 54 = 1440 – 54 = 1386

Hence, option 4 is the correct answer.

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