In the following questions consists of four options containing numbers or symbols. Three of these follow a particular pattern or belong to the same category based on a specific rule of classification. Select the one that does not belong to the group.
Show answer & explanation
Correct answer: C
Explanation
Check the given numbers:
• 19 is a prime number.
• 29 is a prime number.
• 39 is a composite number ().
• 59 is a prime number.
Except 39, all other numbers are prime numbers.
Therefore, 39 is the odd one out.