Question

in a set of first X natural numbers there 30 prime number. find the number of composite numbers in the above set​

Answer 1

Step-by-step explanation:

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,113 are first 30 prime nos. so the rest would be composite nos.

so composite no. are

113 - 30

I.e. = 83

so total composite no. are 83

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