Probability Questions and Answers


General Aptitude

Probability


    1)

    An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white?

  • A)71/190
  • B)121/190
  • C)91/190
  • D)93/190
Answer: C

    2)

    What is the probability that a card drawn at random from a pack of 52 cards is either a King or a Spade?

  • A)17/52
  • B)4/13
  • C)3/13
  • E)13/52
Answer: B

    3)

    In an urn there are 4 red balls and 3 blue balls. if two balls are drawn at random, find the probability that none is red.

  • A)2/7
  • B)4/7
  • C)1/7
  • D)3/7
Answer: C

    4)

    An urn contains 9 blue, 5 white and 7 black balls. If 2 balls are drawn at random, what is the probability that only one ball is white?

  • A)3/10
  • B)7/22
  • C)8/21
  • D)11/21
Answer: C