# Logical Reasoning - Number Series - Discussion

### Discussion :: Number Series - Type 4 (Q.No.5)

Find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters

5.

Look at this series: 8, 43, 11, 41, __, 39, 17, ... What number should fill in the blank?

 [A]. 8 [B]. 14 [C]. 43 [D]. 44

Explanation:

This is a simple alternating addition and subtraction series. The first series begins with 8 and adds 3; the second begins with 43 and subtracts 2.

 Piya said: (Aug 11, 2012) Dear friends look carefully. Split it. As we can see here given data 8, 43, 11, 41, __, 39, 17. Take alternate nos. Then we get. 8, 11, 14, 17.. So on by adding 3 to previous no. &. 43, 41, 39, 37.. So on by subtracting 2 from previous no. I hope you guys got it. Best of luck. :).

 Sumit said: (Sep 13, 2016) Good explanation @Piya.

 Samart said: (Dec 28, 2016) Nice explanation @Piya.

 Manfool said: (Jun 27, 2017) Thanks for the explanation.

 Surya said: (Apr 29, 2018) Very nice explanation. Thanks.

 Fairy said: (Apr 30, 2018) Thank you for explaining it @Piya.

 P. Harshavardhini said: (Jun 18, 2018) Thanks @Priya.

 Rishi said: (Sep 27, 2018) Thanks for the explanation.

 Raj Nayak said: (Sep 29, 2018) 14 is the correct answer.

 Suresh Kenganvaur said: (Nov 18, 2018) Super and useful explanation. Thanks all.

 Fardeen Abbasi said: (May 18, 2020) Thanks for explaining @Piya.

 Vibooshni said: (Mar 2, 2021) Clear explanation, thanks @Priya.

 Sanamdeep Singh said: (Aug 31, 2021) @ALL. Split it into two equation: 8,11,14,17 --->addition of 3. 43,41,39 ---> subtraction of 2.