![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Express the number as a product of its factors.
\The factors of 84:
\84 = 1 × 84.
\84 = 2 × 42.
\84 = 3 × 28.
\84 = 4 × 21.
\84 = 6 × 14.
\84 = 7 × 12.
\Factors of 84 are 1,2,3,4,6,7,12,14,21,28,42 and 84.
\Since the number has more than two factors, it is composite.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The number 84 is a composite number.