# Aptitude - Odd Man Out and Series - Discussion

### Discussion :: Odd Man Out and Series - Find Wrong No. (Q.No.8)

Find out the wrong number in the series.

8.

6, 12, 48, 100, 384, 768, 3072

 [A]. 768 [B]. 384 [C]. 100 [D]. 48 [E]. 12

Explanation:

Each even term of the series is obtained by multiplying the previous term by 2.

2nd term = (1st term) x 2 = 6 x 2 = 12

4th term = (3rd term) x 2 = 48 x 2 = 96.

6th term = (5th term) x 2 = 384 x 2 =768.

4th term should be 96 instead of 100.

 Ashik Mohammed Nazar said: (Jun 7, 2011) You can easily guess it because, 100 is the only number that is not divisible by 6 in the above series !!!

 Kannan.G said: (Feb 18, 2012) Explanation given is not correct because the 7'th term is not equal to 6'th term*2. Think the reason is all the other numbers are multiples of 6 except 100.

 Dhanu said: (Feb 19, 2012) 6, 12, 48, 100, 384, 768, 3072. Divide the num by 2 = 3, 6, 24, 50, 194, 384, 1536 all the number divided by two there is odd. Divide the number by 3 = 2, 4, 16, 100, 128, 256, 1024 here 100 is not divided by 3. So 100 is odd.

 Dhanu said: (Feb 19, 2012) 7th term = (6th term) * 2 = 768 * 2 = 1536 so above the explanation is wrong coz 7th term not equal to 3072.

 Ankit said: (Mar 11, 2012) 3072/768=4 768/384=2 384/96=4(Here instead of 100, 96 should have been the correct sequence no.) 96/48=2 48/12=4 12/6=2 Remainder is alternatingly 4 & 2

 Praveen Kumar said: (Jun 6, 2012) Sol:1st term into 2; (6*2=12) 2nd term into 4; (12*4=48) 3rd term into 2; (48*2=96) 4th term into 4; (96*4=384) 5th.... 6th.... So on

 Tiyasa Majumdar said: (Mar 25, 2014) The above explanation is wrong but answer is correct. The logic is: 6*2 = 12. 12*4 = 48. 48*2 = 96. 96*4 = 384. 384*2 = 768. 768*4 = 3072. So, the odd one is 100.

 Vineetha said: (Mar 12, 2016) We can easily guess it because, 100 is the only number that is not divisible by 6 in the above series.

 Shimaz Javaid said: (Sep 3, 2016) Simplest and correct explanation are other than 100 every term is divisible by 6.

 Sada said: (Jul 31, 2017) Here, 100 is not a multiple of 6.