# Aptitude - Odd Man Out and Series - Discussion

### Discussion :: Odd Man Out and Series - Pick Wrong No. (Q.No.10)

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

10.

125, 127, 130, 135, 142, 153, 165

 [A]. 130 [B]. 142 [C]. 153 [D]. 165

Explanation:

Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.

So, 165 is wrong.

 Birupaksha Pal said: (Dec 3, 2010) The number 127 is a prime so can also be treated as the odd one of the series

 Kanu said: (Sep 18, 2011) I have stil not understand. Anybody help me to clear it.

 Jyoti said: (Sep 23, 2011) Kanu we are adding prime nos successively like 2, 3, 5, 7, 11 and no shoud be 13 not 12, b'coz 12 is not a prime no thats why 165 is a wrong no.

 Rakesh Meshram said: (Feb 17, 2013) 125+2=127 127+3=130 130+5=135 135+7=142 142+11=153 153+13=166 but 165 is not a correct. So 165 is wrong answer.

 Venkatareddy said: (Feb 11, 2014) How we can know adding prime numbers only?

 Lavanyakrishna said: (Jul 26, 2015) Difference between successive numbers is in prime numbers increasing order such as 2, 3, 5, 7, 11, 13. Wrong number is 165.

 Hari said: (Jul 31, 2015) The difference b/w each only prime numbers i, e; 2, 3, 5, 7, 11, 13, 17, 19, 23 etc, but in: 125+2=127. 127+3=130. 130+5=135. 135+7=142. 142+11=153. 153+13=166. But 165 is not a correct. So select 169.

 Kanhaiya Jha said: (Sep 3, 2016) As per my logic, 153 will be the correct answer.

 Manju Babar said: (Aug 26, 2017) How? @Kanhaiya.

 Nikhil Panwar said: (May 29, 2018) Since, 127 is a prime number so take it out.

 Chekka Nageswararao said: (Nov 1, 2019) 9 is prime number so how can 11.

 Dipesh said: (Nov 5, 2019) @Chekka 9 is not prime it is divisible by 3.