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

3/2
2/3
1/2
34/7

Correct Answer: 3/2

Explanation:

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.

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