Question

Write all odd composite numbers less than $50$.

Answer 1

Composite numbers can be defined as natural numbers that have more than two factors. In other words, a number that is divisible by a number other than 1 and the number itself, is called a composite number.

Odd composite numbers less than $50$ are $9,15,21,25,27,33,35,39,45,49$.

• Factors of $9=1,3,9$
• Factors of $15=1,3,5,15$
• Factors of $21=1,3,7,21$
• Factors of $25=1,5,25$
• Factors of $27=1,3,9,27$
• Factors of $33=1,3,11,33$
• Factors of $35=1,5,7,35$
• Factors of $39=1,3,13,39$
• Factors of $45=1,3,5,9,15,45$
• Factors of $49=1,7,49$