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Question

Write the natural numbers from 2 to 12. What fraction of them are prime numbers?


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Solution

The prime numbers from

The natural numbers are2,3,4,5,6,7,8,9,10,11,12.

The prime numbers are2,3,5,7,11.

There are 5 prime numbers out of 11 natural numbers.

Therefore, the fractions of prime numbers from 2 to12. are as follows:

Primenumberfrom2to12totalnumberofnaturalnumbersfrom2to12=511fractionofprimenumberfrom2to12=511.

Hence, the fraction of prime numbers among natural numbers from 2 to 12 is511.


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