# Aptitude - Odd Man Out and Series - Discussion

### Discussion :: Odd Man Out and Series - Odd Man Out (Q.No.14)

Find the odd man out.

14.

3, 5, 7, 12, 17, 19

 [A]. 19 [B]. 17 [C]. 5 [D]. 12

Explanation:

Each of the numbers is a prime number except 12.

 Rakesh said: (Jul 15, 2011) The difference between the two nos following this series- 2, 2, 5, 5, . So the next no will be with the difference of 8 i.e. 25. So 19 is odd.

 Amarjit said: (Aug 8, 2011) Rakesh is exactly true.

 Satyavani said: (Aug 16, 2011) 3,5,7,12,17,19 3,5,7,17,19 are odd numbers. only 12 is even number.

 Raghu Ram said: (Nov 22, 2011) 12 is a composite number.

 Harika said: (Jun 14, 2012) 3, 5, 7, 17, 19 odd numbers. 12 is even number. So the answer is 12.

 Malar said: (Aug 21, 2012) Harika is exactly true....

 Moses said: (Sep 7, 2012) True, becaus 3,5,7,19 odd numbers 12 is even number.

 Priyanka said: (Jan 24, 2013) @Raghu. What is composite number please explain?

 Abinayak said: (Mar 1, 2013) Exactly answer identified in each number difference in 2 but 12 and 17 difference in 5. So answer is 12.

 Sweta said: (Jul 19, 2013) We can also say that every number here is odd except 12.

 Ramesh said: (Aug 7, 2013) 3, 5, 7, 17, 19 odd numbers. 12 is even number.

 Pavankumar said: (Sep 30, 2013) 3, 5, 7, 17, 19, 12 in this 12 is even number, so the answer is 12.

 Rajat said: (Oct 14, 2013) @Priyanka. Non-prime numbers are composite numbers.

 Santosh said: (Dec 10, 2013) Please anyone can explain what is prime number?

 Abdul Rasheed said: (Jan 2, 2014) True, because 3, 5, 7, 19 odd numbers. 12 is even number.

 Priya said: (May 25, 2014) 3+2 = 5. 5+2 = 7. 7+5 = 12. 12+5 = 17. 19 +2 = 23. Every answer is odd number so 12 is even.

 Aiswarya said: (Sep 30, 2014) To be clear 12 is not a prime number because it is divisible by 9 and 1. Prime number is only divisible by 1 and it should not be multiple of any other number.

 Pallav Sharma said: (Oct 16, 2014) Except 12 all other numbers are prime. So answer is 12.

 Aparna Devi said: (Jan 21, 2015) Please anyone can explain what is prime number and what is composite number?

 Suyash said: (Apr 3, 2015) Prime number is a number who has no factor except 1 and the number itself while composite number contain other factors leaving 1 and the number itself.

 Sarmi said: (Jun 20, 2015) 19, 5, 17 are odd & 12 is even so answer is 12.

 Abhishek Sinha said: (Oct 1, 2015) 12 is prime numbers.

 Ben said: (Jan 29, 2016) 12 is even number.

 Ashraf Hashmi said: (Jan 31, 2016) 12 is even number because it is divisible by 2, 3, 4, 6 (Prime number divisible by 1 and itself).

 Abhi said: (May 26, 2016) All are odd numbers expect 12. So, here the odd man is 12.

 Abdullah Almamun said: (Jul 20, 2016) Satyavani is exactly true.

 Mobi said: (Jun 13, 2017) The series can follow 2, 5, 2, 5 (these being the difference between the two numbers). So the series will be like 3 5 10 12 17 19. So 7 is the odd one out.

 Adhiyan said: (Oct 16, 2017) The remainder for every other number is 1 except 12 hence 12 is the odd one. 3/2 = 1 5/2 = 1 7/2 = 1 12/2 = 0 this is right 17/2 = 1 19 / 2 = 1

 Tony Stark said: (Nov 21, 2017) 3+5 =7 7+5 =12 12+7= 19 Thus if form Fibbonaci series then odd one in series is 12 . 12 also be the answer.

 Hari said: (Dec 13, 2018) All are odd numbers except 12.

 Jmk said: (Jan 7, 2019) Yes, all are odd numbers without 12.

 Saiteja said: (Jun 25, 2019) Yes, all are odd numbers except 12 so answer is 12.