Aptitude - Odd Man Out and Series - Discussion

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

15. 

25, 36, 49, 81, 121, 169, 225

[A]. 36
[B]. 49
[C]. 121
[D]. 169

Answer: Option A

Explanation:

The numbers are squares of odd natural numbers, starting from 5 up to 15.

So, 36 is wrong.


Harsh said: (Apr 7, 2011)  
Here least square of the number given in option is 36.

Ramya said: (Jul 28, 2011)  
Here 36 is the square of even natural number and hence it should be the answer.

Deva said: (Aug 24, 2011)  
The numbers are squares of odd natural numbers, starting from 5 up to 15.

So, 36 is wrong.

Rakesh Meshram said: (Feb 17, 2013)  
25=5*5 :5
36=6*6 :6
49=7*7 :7
81=9*9 :9
121=11*11 :11
169=13*13 :13
225=15*15 :15

There is use 5,7,9,11,13,15.. square series but 6*6+36 is not correct in this series so 36 is wrong answer.

Krishnendu Chakraborty said: (Aug 26, 2014)  
36 is also the lone even number in the given series. All the other numbers are odd. Hence, 36 is the answer.

Kowsi said: (Sep 10, 2016)  
25 = 5 * 5 : 5,
36 = 6 * 6 : 6,
49 = 7 * 7 : 7,
81 = 9 * 9 : 9,
121 = 11 * 11 : 11,
169 = 13 * 13 : 13,
225 =15 * 15 : 15.

5, 7, 9, 11, 13, 15 are an odd number but 6 is an even number. So 36 is the answer.

Jay said: (Mar 1, 2017)  
6*6 is the only even number.

Ashutosh said: (Jun 23, 2017)  
6 is the only even number in the series of the square pattern.

Mahmad said: (Jul 31, 2017)  
139, 152, 160, 160, 181, 191, 202.

Find the wrong no.

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