Join ExamsbookAnswer : 4. "17/20"
Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ?5
Q: Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ?
- 116/19false
- 21false
- 33/2false
- 417/20true
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Answer : 4. "17/20"
Explanation :
Answer: D) 17/20 Explanation: n(S) = 20n(Even no) = 10 = n(E)n(Prime no) = 8 = n(P)P(E U P) = 10/20 + 8/20 - 1/20 = 17/20