Find the odd one out 13, 41,43, 47, 53, 61, 71, 73, 81?
Find the odd one out 13, 41,43, 47, 53, 61, 71, 73, 81?
Explanation
The other numbers in the list are all prime numbers, whereas 81 is a composite number (3^4).
The other numbers in the list are all prime numbers, whereas 81 is a composite number (3^4).