The probability that a number selected at random from the first 100 natural numbers is a composite number is ?

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Accepted Answer

The number of exhaustive events = 100 C₁ = 100. We have 25 primes from 1 to 100. Number of favourable cases are 75. Required probability = 75/50 = 3/2.

The probability that a number selected at random from the first 100 natural numbers is a composite number is ?

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