Pick two numbers that are the odd ones out of the following numbers.
2, 13, 29, 37, 57, 71,91

Correct option is B

GIVEN: 2, 13, 29, 37, 57, 71,91 numbers
Solution:
Prime number: A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. In simpler terms, a prime number is only divisible by 1 and itself.  
Examples of prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.
The given numbers are:
2 (prime)
13 (prime)
29 (prime)
37 (prime)
57 (not prime; divisible by 3 and 19)
71 (prime)
91 (not prime; divisible by 7 and 13)
In this sequence, all the numbers except 57 and 91 are prime numbers. So,
= 57 and 91 are the odd ones out.