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# Logical Reasoning - Number Series - Discussion

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"Love is like a war, Easy to begin Hard to end."
- (Proverb)

In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much

4.

Look at this series: 22, 21, 23, 22, 24, 23, ... What number should come next?

 [A]. 22 [B]. 24 [C]. 25 [D]. 26

Explanation:

In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on.

 Abhiram said: (Sun, Oct 10, 2010 12:47:05 AM) Another way to solve problem: Sum alternatively it will get 22 + 1 = 23 23 + 1 = 24 21 + 1 = 22 22 + 1 = 23 so 24 + 1 = 25.

 Pundik Vinayak said: (Wed, Aug 31, 2011 11:58:26 PM) Here there is two no series following. 22 23 24 25 26 27. 21 22 23 24 25 26.

 Santhikannan said: (Fri, Dec 2, 2011 02:53:55 PM) 22-1=21 21+2=23 23-1=22 22+2=24 24-1=23 23+2=25 (Therefor 23+2=25)

 Vishal said: (Sat, Feb 18, 2012 04:18:06 PM) We can see in in the pair of two number ... (A)22 & 21 (B)23 & 22 (C)24 & 23 Answer in the series is (D) 25 & 24

 Dipti said: (Tue, Mar 26, 2013 01:26:07 PM) 22-1=21. 21+2=23. 23-1=22. 22+2=24. 24-1=23. 23+2=25. Hence answer =25.

 Mahantesh said: (Tue, Apr 16, 2013 01:15:04 PM) It is 1 and -2 series 22-21 = 1, 21-23 = -2 and so on 22-21 = 1 21-23 = -2 23-22 = 1 22-24 = -2 24-23 = 1 23-25 = -2 Answer is 25.