# Aptitude - Odd Man Out and Series - Discussion

### Discussion :: Odd Man Out and Series - Pick Wrong No. (Q.No.15)

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

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.