Question

write the natural number from 9 to 21.what fraction of them in a prime number​

Answer 1

Answer:

natural no= 9,10,11,12,13,14,15,16,17,18,19,20

prime no=11,13,17,19

factor= 4/12

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Answer 2

Answer:

5/13 of the natural numbers from 9 to 21 are prime numbers.