# Logical Reasoning - Number Series - Discussion

Discussion Forum : Number Series - Type 1 (Q.No. 4)

*Directions to Solve*

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?

Answer: Option

Explanation:

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

Discussion:

39 comments Page 1 of 4.
Janhavi Landge said:
2 months ago

The simple alternating subtraction and addition series;

1 is subtracted then 2 is added

22 - 1 = 21,

21 + 2 = 23,

23 - 1 = 22,

22 + 2 = 24,

24 - 1 = 23,

23 + 2 = 25.

The correct answer is 25.

1 is subtracted then 2 is added

22 - 1 = 21,

21 + 2 = 23,

23 - 1 = 22,

22 + 2 = 24,

24 - 1 = 23,

23 + 2 = 25.

The correct answer is 25.

(5)

Shankar said:
4 months ago

I am understanding it now easily. Thanks all for explaining.

(4)

Monalisha Satapathy said:
4 months ago

Agree, 25 is the correct answer.

(1)

Komal Yadav said:
5 months ago

Yes, the answer will be 25.

(3)

Rohit Singh said:
6 months ago

Yes, Option C is the correct answer.

(2)

PRAMOD TADINGI said:
8 months ago

22-1= 21+2 = 23

23-1= 22+2 = 25.

In this number series, 1 has been subtracted with first given number, then again 2 has been added with (subtracted) obtained number.

So, the right answer will be 25.

23-1= 22+2 = 25.

In this number series, 1 has been subtracted with first given number, then again 2 has been added with (subtracted) obtained number.

So, the right answer will be 25.

(5)

Kishor said:
1 year ago

Thank you for the answer.

(9)

Shrikath kori said:
2 years ago

22-1=21,

21+2=23,

23-1=22,

22+2=24,

24-1=23,

23+2=25.

21+2=23,

23-1=22,

22+2=24,

24-1=23,

23+2=25.

(42)

Kavya said:
2 years ago

The logic of the Series is -1, +2 so the answer is 25.

(19)

Shigella said:
3 years ago

Thanks everyone for explaining the answer.

(6)

Post your comments here:

Your comments will be displayed after verification.

Quick links

Quantitative Aptitude

Verbal (English)

Reasoning

Programming

Interview

Placement Papers

© IndiaBIX™ Technologies