11
13
15
17
Answer is Right!
Answer is Wrong!
The odd number in the given list is 15.
All other numbers are prime numbers. A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number.
11, 13, and 17 are all prime numbers. 15 is a composite number because it is the product of 3 and 5.