logo

CuriousTab

CuriousTab

Discussion


Home Aptitude Probability Comments

  • Question
  • If a card is drawn at random from a pack of 52 cards,what is the chance of getting a spade or ace?


  • Options
  • A. 0.25
  • B. 5/13
  • C. 0.20
  • D. 4/13

  • Correct Answer
  • 4/13 

    Explanation

    Number of spades in a standard deck of cards=13
    Number of aces in a standard deck of cards=4
    And,one of the aces is a spade.
    So, 13 + 4 - 1 = 16 spades or aces to choose from.
    Therfore,probabiltiy of getting a spade or an ace=16/52=4/13


  • Probability problems


    Search Results


    • 1. If P(A)=4/9;then the odd against the event A is:

    • Options
    • A. 4:9
    • B. 4:5
    • C. 5:4
    • D. 4:14
    • Discuss
    • 2. A bag contains 8 red and 4 green balls. Find the probability that two balls are red and one ball is green when three balls are drawn at random.

    • Options
    • A. 56/99
    • B. 112/495
    • C. 78/495
    • D. None of these
    • Discuss
    • 3. One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn find the probability the card drawn is red.

    • Options
    • A. 2/3
    • B. 1/2
    • C. 1/52
    • D. 13/51
    • Discuss
    • 4. A bag contains 7 green and 5 black balls. Three balls are drawn one after the other. The probability of all three balls being green, if the balls drawn are not replaced will be:

    • Options
    • A. 123/897
    • B. 23/67
    • C. 7/44
    • D. 12/45
    • Discuss
    • 5. A brother and a sister appear for an interview against two vacant posts in an office. The probability of the brother?s selection is 1/5 and that of the sister?s selection is 1/3. What is the probability that only one of them is selected?

    • Options
    • A. 1/5
    • B. 3/4
    • C. 2/5
    • D. 3/5
    • Discuss
    • 6. One lady has 2 children, one of her child is boy, what is the probability of having both are boys ?

    • Options
    • A. 1/3
    • B. 1/2
    • C. 2/3
    • D. 2/5
    • Discuss
    • 7. If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is ?

    • Options
    • A. 1
    • B. 1/2
    • C. 0
    • D. 3/5
    • Discuss
    • 8. 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 ?

    • Options
    • A. 6/7
    • B. 19/21
    • C. 7/31
    • D. 5/21
    • Discuss
    • 9. In a simultaneous throw of two dice, what is the probability of getting a doublet ?

    • Options
    • A. 1/6
    • B. 1/3
    • C. 4/7
    • D. 4/5
    • Discuss
    • 10. A group of five persons is formed from five boys and four girls. Find the probability that there are at least two girls in the group?

    • Options
    • A. 110/129
    • B. 5/6
    • C. 121/126
    • D. 3/7
    • Discuss


    Comments

    There are no comments.

Enter a new Comment