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Probability problems


  • 1. 
    What is the probability that a non-leap year contains 52 Tuesday only?

  • Options
  • A. 1/7
  • B. 2/7
  • C. 3/7
  • D. 6/7
  • Discuss
  • 2. 
    From a pack of 52 playing cards, two cards are drawn together at random. Calculate the probability of both the cards being king?

  • Options
  • A. 1/15
  • B. 25/57
  • C. 35/256
  • D. None of these
  • Discuss
  • 3. 
    In a bag containing three balls, a white ball was placed and then one ball was taken out at random. What is the probability that the extracted ball would turn on to be white, if all possible hypothesis concerning the colour of the balls that initially in the bag were equally possible?

  • Options
  • A. 5/8
  • B. 3/4
  • C. 1/2
  • D. 3/8
  • Discuss
  • 4.  Raja can hit a target 3 times in 6 shots, Karan can hit the target 2 times in 6 shots and Ashwini can hit 4 times in 4 shots. What is the probability that atleast 2 shots hit the target?

  • Options
  • A. 1/2
  • B. 2/3
  • C. 1/3
  • D. 5/6
  • Discuss
  • 5. 
    In his wardrobe, Girdhari has 3 trousers. One of them is grey the second blue and the third brown. In his wardrobe he also has 4 shirts. One of them is grey and the other 3 are white. He opens his wardrobe in the dark and pick out one shirt trouser pair without examination the color. What is the likelihood that neither the shirt nor the trouser is grey?

  • Options
  • A. 1/12
  • B. 1/6
  • C. 1/4
  • D. 1/2
  • Discuss
  • 6. 
    A brother and sister appear for an interview against two vacant posts in an office. The probability of the brother's selection is 1/5th and that of the sister's selections is 1/3rd. What is the probability that one of them is selected?

  • Options
  • A. 1/5
  • B. 2/5
  • C. 1/3
  • D. 2/3
  • Discuss
  • 7. 
    Two packs of card are thoroughly mixed and shuffled and two cards are drawn at random, one after the other. What is the probability that both of them are jack?

  • Options
  • A. 1/13
  • B. 2/13
  • C. 7/1339
  • D. 1/169
  • Discuss
  • 8. 
    when three coins are tossed together the probability that all coins have the same face up, is?

  • Options
  • A. 1/3
  • B. 1/6
  • C. 1/8
  • D. 1/12
  • Discuss
  • 9. 
    Cards are down at random from a pack of 200 cards numbered 1 to 200. Find the probability of drawing a number which is a perfect cube?

  • Options
  • A. 1/40
  • B. 3/40
  • C. 7/40
  • D. 19/40
  • Discuss
  • 10. 
    Two unbiased dice are thrown simultaneously. the probability of getting the sum divisible by 3, is?

  • Options
  • A. 11/36
  • B. 12/36
  • C. 13/36
  • D. 17/36
  • Discuss

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