Set Representation
Examples
Key Properties of Composite Numbers
Even composite numbers (4, 6, 8, 10…)
Odd composite numbers (9, 15, 21, 25…)
⭐ 5 Examples of Composite Numbers (with Explanation)
📝Explanation: 4 has factors 1, 2, 4 → 3 factors → composite.
📝 Description: 9 = 3 × 3 → composite.
📝 Description: Composite = more than two factors.
📝 Description: 13 is prime.(Have only 2 factors 1 & Itself)
📝 Description: 1 has only one factor.
📝 Description: 21 = 3 × 7.
📝 Description: All even numbers > 2 are composite.
📝 Description: More than two factors → composite.
📝 Description: Composite numbers: 1 → 4, 6, 8, 9 → 10 = Total 4
📝 Description: 25 = 5 × 5.
📝 Description: Many factors → composite.
📝 Description: 49 = 7 × 7.
📝 Description: 15 & 21 are composite.
📝 Description: 20 → 21, 22, 24, 25, 26, 27, 28 → 30 = Total 7
📝 Description: Factorization → composite(More than 2 factors)
📝 Description: 72 = 2 × 2 × 2 × 3 × 3.
📝 Description: Product of two consecutive numbers → never prime.
📝 Description: Non-prime factorization.
📝 Description: 91 = 7 × 13.
📝 Description: Prime numbers have only two factors; more → composite.
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