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- Subject
- Probabilitymathematics-mcqs › probability
- Published
- 11 Jul 2019
- Last updated
- 28 May 2026
Explanation
Among the nine bulbs, there are four defective and five functional ones. The probability that all four selected bulbs are defective is calculated by the ratio of combinations of choosing 4 defective bulbs out of 4 to the combinations of choosing any 4 bulbs out of 9, which is 4C4 / 9C4 = 1 / 126.
More Probability MCQs
Practice related questions from the same subject.
- 1.Which type of operation involves calculating the probability related to interest rates?
- 2.What is the probability that the total number of dots shown after rolling a die twice equals 8?
- 3.A drawer contains 4 white socks, 3 blue socks, and 5 grey socks. If two socks are drawn at random, what is the probability that both socks are of the same color?
- 4.What is the likelihood of selecting two clubs consecutively from a thoroughly shuffled standard deck of 52 cards?
- 5.What is the probability that in a group of 5 girls and 2 boys, no two boys sit next to each other when arranged for a photo?
- 6.If a single card is randomly selected from a standard deck of 52 cards, what is the probability of drawing either the queen of clubs or the king of hearts?
- 7.Two cards are drawn sequentially from a standard deck with replacement. What is the probability that the first card is red and the second card is a king?
- 8.In a group of 10 individuals working on a project, 4 are graduates. If 3 people are chosen at random, what is the probability that at least one of them is a graduate?
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