Question

write down separately the prime and composite numbers less than 20​

Answer 1

Answer:

the prime and composite number are as follows..

Prime: 1, 2, 3, 5, 7, 11, 13, 17, 19.

Composite: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18. ...

Prime numbers have only two factors i.e.1 and the number itself.

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