Solution
To find the odd group, let us check each option-
A) 2, 3, 5, 7 → All are prime numbers.
B) 17, 19, 23, 29 → All are prime numbers.
C) 53, 59, 61, 67 → All are prime numbers.
D) 37, 41, 43, 49 → 49 is not a prime number (since 49=7*7)
Since all other groups consist entirely of prime numbers, the odd group is D) 37, 41, 43, 49, because 49 is not a prime number.
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