1.

Complete the series choosing the missing number: 3, 7, 11, ______, 19, 231. 142. 183. 154. 20

Answer» Correct Answer - Option 3 : 15

Calculation:

The number series follows logic as:

3 + 4 = 7

7 + 4 = 11

11 + 4 = 15

15 + 4 = 19

19 + 4 = 23

∴The missing number is 15.



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