Arithmetic Aptitude :: Probability
- A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If two marbles are drawn at random, what is the probability that at least one is green?
- A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are drawn what is the probability that one is yellow and two are red?
- A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
- Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is -.
- 10 books are placed at random in a shelf. The probability that a pair of books will always be together is -.
- The probability of a lottery ticket being a prized ticket is 0.2. When 4 tickets are purchased, the probability of winning a prize on atleast one ticket is -.
- In a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples?
- The probability that A speaks truth is 3/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?
- Out of 10 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them?
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