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Classify Numbers: Prime, Composite, or Neither

publish date: 2026/05/23 05:02:19.154267 UTC

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Drag each number into the correct category.

drag and drop the selected option to the right place

Correct Answer

(1) 2,Prime
(2) 13,Prime
(3) 17,Prime
(4) 9,Composite
(5) 15,Composite
(6) 1,Neither

Explanation

Prime numbers have exactly two unique factors. 2, 13, and 17 are prime. Composite numbers have three or more factors: 9 (1, 3, 9) and 15 (1, 3, 5, 15). The number 1 is neither prime nor composite.

Reference

Introduction to Differential Calculus (Systematic Studies with Engineering Applications for Beginners) - 2012

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