जॉइन Examsbookउत्तर : 1. "3/2"
The probability that a number selected at random from the first 100 natural numbers is a composite number is ?5
प्र: The probability that a number selected at random from the first 100 natural numbers is a composite number is ?
- 13/2true
- 22/3false
- 31/2false
- 434/7false
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उत्तर : 1. "3/2"
व्याख्या :
Answer: A) 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.