Aptitude - Odd Man Out and Series - Discussion

Find out the wrong number in the given sequence of numbers.

4. 

1, 8, 27, 64, 124, 216, 343

[A]. 8
[B]. 27
[C]. 64
[D]. 124

Answer: Option D

Explanation:

The numbers are 13, 23, 33, 43 etc. So, 124 is wrong; it must have been 53 i.e., 125.

Sonutalwani said: (Jun 29, 2012)  
1*1*1=1.
2*2*2=8.
3*3*3=27.
4*4*4=64.
5*5*5=125.
6*6*6=216.
7*7*7=343.

124 is not a perfect cube of any number.

Shameem Khan said: (Aug 24, 2013)  
1 8 27 64 124 216 343.

a:1 = 1.
8 = 8.
27=2+7=9.
64=6+4=10=1+0=1.
124=1+2+4=7.
216=2+1+6=9.
343=3+4+3=10=1+0=1.

Here the series is 1 8 9 1 8 9 1 8 9 but here second 8th position is occupied by 7. So the wrong number is 124.

S.Sri Raja Markandayan said: (Jun 5, 2015)  
I have a different option except 64, other nos cannot be taken squares. Check out.

Abi said: (Sep 22, 2015)  
Very useful for my interviews thanks.

Anonymous said: (Jun 26, 2017)  
Is it correct if we see it this way?

1-odd.
8-even.
27-odd.
64-even.
124-even.
216-even.
343-odd.

So there should be an odd number between 64 and 216 to maintain the odd-even series hence 124 is wrong.

Ayush Aggarwal said: (Feb 18, 2018)  
27 Number is an Odd Number.

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