Question

Choose the correct statement about composite numbers.

• A. All the even numbers are composite in nature.
• B. All Odd numbers are composite numbers.
• C. Every composite number has a prime factor.
• D. All of the above.

Answer 1

The correct option is C Every composite number has a prime factor.

All even numbers are not composite because $2$ is smallest even number which is prime.

All odd numbers are also not composite. Some of them are prime also.
Example: 7 is an odd number but is not a composite number.

Correct: Every composite number has a prime factor.
Explaination: it can be understood by spliting any composite number into its factors.
For example: $36$ is composite number which have prime factors $2\&3$.