Which of the following is the odd one out?

Questions :

Which of the following is the odd one out?

Options :

• 3, 5, 7
• 11, 13, 17
• 19, 23, 29
• 4, 9, 16

correct answer : d)

Explanation :

First three groups contain only prime numbers. 4, 9, 16 are perfect squares.