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Question
The probability that a number selected at random from the first 50 natural numbers is a composite number is -.
Options:
A .  21/25
B .  17/25
C .  4/25
D .  8/25
E .  9/25
Answer: Option B


The number of exhaustive events = ⁵⁰C₁ = 50.We have 15 primes from 1 to 50.Number of favourable cases are 34.Required probability = 34/50 = 17/25.



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