Aptitude - Odd Man Out and Series - Discussion

Insert the missing number.

4. 

2, 4, 12, 48, 240, (....)

[A]. 960
[B]. 1440
[C]. 1080
[D]. 1920

Answer: Option B

Explanation:

Go on multiplying the given numbers by 2, 3, 4, 5, 6.

So, the correct next number is 1440.


Gopinath said: (May 26, 2011)  
2*2 4*3 12*4 48*5 240*6

Vamsi said: (Jun 3, 2011)  
Alternate method
2*1=4
(2+4)*2=12
(12+4)*3=48
.
.
(240+48)*5=1440

Shivam said: (Jul 13, 2014)  
2*2 = 4.
4*3 = 12.
12*4 = 48.
48*5 = 240.
240*6 = 1440.

Arjun said: (Apr 14, 2016)  
Simple method:

2 * 2.
4 * 3.
12 * 4.
48 * 5.
240 * 6 = 1440.

Dananjeyan said: (Jan 25, 2017)  
2, 4, 12, 44, 194, 992 find the wrong one.

Please tell me the solution.

Satyanarayan Majhi said: (Nov 11, 2019)  
2x2 = 4.
4x3 = 12.
12x4 = 48.
48x5 = 240.
240x6 = 1440.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.