
Probability
Probability: Probability Formulas, Probability Meaning, Conditional Probability Definition, Probability Problems, Probability Questions with Solved Exercises

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Online Aptitude Questions with Answers on Probability
Q16. **The probability that a number selected at random from the first 50 natural numbers is a composite number is -.**
- 21/25
- 17/25
- 4/25
- 8/25
- 9/25
Solution : 17/25
Q17. **A coin is tossed five times. What is the probability that there is at the least one tail?**
- 31/32
- 1/16
- 1/2
- 1/32
- N0ne of these
Solution : 31/32
Q18. **If a number is chosen at random from the set {1, 2, 3, ...., 100}, then the probability that the chosen number is a perfect cube is -.**
- 1/25
- 1/2
- 4/13
- 1/10
- 9/13
Solution : 1/25
Q19. **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 -.**
- 1/2
- 16/19
- 4/5
- 17/20
- 3/5
Solution : 17/20
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Q20. **If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is -.**
- 1/4
- 1/2
- 3/4
- 3/5
- None of these
Solution : 1/2
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