write down separately the prime and coposite numbers less than 20
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prime numbers and composite numbers less than 20 are, prime numbers: 2, 3, 5, 7, 11, 13, 17, 19. composite numbers: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
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A prime number is a number that has exactly two factors, i.e. ‘1’ and the number itself.
A composite number has more than two factors, which means apart from getting divided by number 1 and itself,
Prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, 19
Composite numbers less than 20 are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
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