Conditional Probability Quiz

12 Questions

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Conditional Probability Quizzes & Trivia

This is a self-check quiz on probability. Take this quiz and see how well do you know about it!


Questions and Answers
  • 1. 
    • A. 

      0.6

    • B. 

      0.3

    • C. 

      0.1

    • D. 

      0.4

  • 2. 
    • A. 

      6

    • B. 

      4

    • C. 

      12

    • D. 

      9

  • 3. 
    An identity card is picked at random. What is the probability that the sum of the last two digits of its number is 9?
    • A. 

      0.5

    • B. 

      0.4

    • C. 

      0.1

    • D. 

      0.2

  • 4. 
    One of the 5 points (3, 2), (2, 1), (1, - 4), (5, 5) and (4, 6) is selected at random. What is the probability that it lies on the straight line 3x – 2y = 5?
    • A. 

      0.4

    • B. 

      0.2

    • C. 

      0.1

    • D. 

      0.5

  • 5. 
    The letters of the word “PROBABILITY” are written on cards and the cards are then shuffled. If a card is picked at random, find the probability that it will contain a vowel.
    • A. 

      5/11

    • B. 

      3/11

    • C. 

      7/11

    • D. 

      4/11

  • 6. 
    I have two 10-cent coins, three 20-cent coins, four 50-cent coins and five $1 coins in my pocket. If I choose a coin at random, find the probability that the coin is worth at least 50 cents.
    • A. 

      4/7

    • B. 

      3/7

    • C. 

      9/14

    • D. 

      5/14

  • 7. 
    A man tosses two fair dice. One is numbered 1 to 6 in the usual way and the other is numbered 1, 3, 5, 7, 9 and 11. Find the probability that the total of the two numbers shown is greater than 10.
    • A. 

      7/12

    • B. 

      5/12

    • C. 

      1/2

    • D. 

      1/4

  • 8. 
    • A. 

      5/13

    • B. 

      1/4

    • C. 

      4/13

    • D. 

      1/52

  • 9. 
    Two fair dice, one red and one blue, are tossed. What is the probability that the total of the numbers shown by the two dice exceeds 3?
    • A. 

      1/3

    • B. 

      1/4

    • C. 

      11/12

    • D. 

      1/12

  • 10. 
    A bag contains 30 balls. The balls are numbered 1,2,3,4 ….30. A ball is drawn at random. Find the probability that the number on the ball is a prime number.
    • A. 

      8/9

    • B. 

      2/3

    • C. 

      1/3

    • D. 

      4/9

  • 11. 
    An interview with 18 people revealed that 5 of the 8 women and 8 of the 10 men preferred drinking coffee to tea. What is the probability that if one person is selected from the group of 18 people, it is either a woman or someone who preferred to drink coffee than tea?
    • A. 

      8/9

    • B. 

      1/3

    • C. 

      1/9

    • D. 

      2/3

  • 12. 
    A computer generates 4-digit random numbers in the range 0000 to 9999 inclusive. Find the probability that the computer produces a random number that begins and ends with the digit 1.
    • A. 

      1/10

    • B. 

      1/4

    • C. 

      1/1000

    • D. 

      1/100