Which number will complete the number series? 2, 5, 12, 23, 38, 57,_____?
Which number will complete the number series? 2, 5, 12, 23, 38, 57,_____?
Explanation
The pattern of the series is:
+3, +7, +11, +15, +19...
So, the next difference should be +23:
57 + 23 = 80
The correct answer is 80.