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  • Question
  • 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

  • Correct Answer
  • 5:4 

    Explanation

    Here,P(A)=4/9=p/(p+q)

    P(odd against event A)=q/p=5/4


  • Probability problems


    Search Results


    • 1. 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
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ?

    • Options
    • A. 16/19
    • B. 1
    • C. 3/2
    • D. 17/20
    • Discuss
    • 6. 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
    • Discuss
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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


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