Home » Aptitude » Odd Man Out and Series

In the following number series, one of the numbers is wrong. Find it out? 77, 79, 76, 81, 75, 85

Correct Answer: 75

Explanation:

Here in the given series, it follows a pattern that


 


77 + 2 = 79


 


79  - 3 = 76


 


76 + 5 = 81


 


81 -  7 = 74


 


74 + 11 = 85


 


Consecutive adding and subtracting of prime numbers.


 


So the wrong number in the given series is 75.


← Previous Question Next Question→

Discussion & Comments

No comments yet. Be the first to comment!
Join Discussion