Question

Q12. Write down separately the prime and composite numbers less than 20.
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Answer 1

Answer:

prime no. : 2,3,5,7,11,13,17,19

composite no. : 4,6,8,10,12,14,15,16,18

Answer 2

Answer:

prime numbers:- 2,3,5,7,11,13,17,19

composite numbers:- 4,6,8,9,10,12,14,15,16,18,20

1-neither prime nor composite