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  • Question
  • In a simultaneous throw of pair of dice. Find the probability of getting the total more than 7.


  • Options
  • A. 1/2
  • B. 5/12
  • C. 7/15
  • D. 3/12

  • Correct Answer
  • 5/12 

    Explanation

    Here n(S) = (6 x 6) = 36

    Let E = event of getting a total more than 7
            = {(2,6),(3,5),(3,6),(4,4),(4,5),(4,6),(5,3),(5,4),(5,5),(5,6),(6,2),(6,3),(6,4),(6,5),(6,6)}

    Therefore,P(E) = n(E)/n(S) = 15/36 = 5/12.


  • Probability problems


    Search Results


    • 1. Two dice are rolled simultaneously. Find the probability of getting the sum of numbers on the on the two faces divisible by 3 or 4?

    • Options
    • A. 3/7
    • B. 7/11
    • C. 5/9
    • D. 6/13
    • Discuss
    • 2. What is the probability that a number is divisible by 4?

    • Options
    • A. 2
    • B. 1/2
    • C. 1/4
    • D. 1
    • Discuss
    • 3. The probability that z lies between 0 and 3.01

    • Options
    • A. 0.4987
    • B. 0.5
    • C. 0.9987
    • D. 0.1217
    • Discuss
    • 4. Four dice are thrown simultaneously. Find the probability that all of them show the same face.

    • Options
    • A. 1/216
    • B. 1/36
    • C. 2/216
    • D. 4/216
    • Discuss
    • 5. In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

    • Options
    • A. 1/3
    • B. 3/5
    • C. 8/21
    • D. 7/21
    • Discuss
    • 6. A number X is chosen at random from the numbers -3, -2, -1, 0, 1, 2, 3. What is the probability that |X|<2

    • Options
    • A. 3/7
    • B. 3/4
    • C. 4/5
    • D. 5/7
    • Discuss
    • 7. A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

    • Options
    • A. 10/21
    • B. 11/21
    • C. 1/2
    • D. 2/7
    • Discuss
    • 8. An unbiased die is tossed.Find the probability of getting a multiple of 3.

    • Options
    • A. 1/3
    • B. 1/2
    • C. 3/4
    • D. 3/2
    • Discuss
    • 9. In a bag which contains 40 balls, there are 18 red balls and some green and blue balls. If two balls are picked up from the bag without replacement, then the probability of the first ball being red and second being green is 3/26. Find the number of blue balls in the bag.

    • Options
    • A. 16
    • B. 12
    • C. 10
    • D. 14
    • Discuss
    • 10. There are four hotels in a town. If 3 men check into the hotels in a day then what is the probability that each checks into a different hotel?

    • Options
    • A. 1/2
    • B. 3/4
    • C. 4/7
    • D. 3/8
    • Discuss


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