Question

no of natural numbers less than 100 with exactly 4 factors
pls help quick​

Answer 1

Answer:

there are a total of 32 no under 100 which have exactly four factors

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Answer 2

Step-by-step explanation:

Integers less than 100 with exactly 4 odd factors but no even factors:

15=3*5 --> factors 1, 3, 5, 15;

21=3*7 --> factors 1, 3, 7, 21;

27=3^3 --> factors 1, 3, 9, 27;

33=3*11 --> factors 1, 3, 11, 33;

35=5*7 --> factors 1, 5, 7, 35;

39=3*13 --> factors 1, 3, 13, 39;

51=3*17 --> factors 1, 3, 17, 51;

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