1.

What will come in place of question mark (?) in the following number series?18, 21, 27, 39, ?, 111 1. 632. 363. 664. 605. None of these

Answer» Correct Answer - Option 1 : 63

Calculation:

The series follows the following pattern

18 + 3 = 21

21 + 6 = 27

27 + 12 = 39

39 + 24 = 63

63 + 48 = 111

∴ The missing number is 63.


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