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What should come in place of question mark ‘?’ in the following number series? 6, 140, 1520, 15360, ?

What should come in place of question mark ‘?’ in the following number series? 6, 140, 1520, 15360, ? Correct Answer 153800

The pattern followed in this question is:

(6 + 8) × 10 = 140

(140 + 12) × 10 = 1520

(1520 + 16) × 10 = 15360

(15360 + 20) × 10 = 153800

∴ The missing term is 153800 & correct alternative is 3.

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