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JAMB and WAEC Mathematics questions: Probability

48 questions with answers and explanations. Tap an option to check yourself.

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All topicsBinary operations · 35Coordinate geometry · 46Differentiation · 24Euclidean geometry · 51Fractions, decimals, approximations and percentages · 56Indices, logarithms and surds · 59Inequalities · 41Integration · 23Loci · 31Matrices and determinants · 25Mensuration · 53Number bases · 49Permutation and combination · 22Polynomials · 57Probability · 48Progressions · 48Sets · 46Statistics · 53Trigonometry · 52Variation · 42

  1. Question 21· Probability· WAEC

    A fair die is thrown once. What is the probability of getting a number greater than 4?

    Explanation and discussion

  2. Question 22· Probability· JAMB

    A card is drawn at random from a pack of 52 playing cards. What is the probability that it is an ace?

    Explanation and discussion

  3. Question 23· Probability· WAEC

    A bag has 5 red and 3 blue balls. A ball is picked at random. P(blue) is

    Explanation and discussion

  4. Question 24· Probability· WAEC

    Two fair coins are tossed together. Find the probability of getting two heads.

    Explanation and discussion

  5. Question 25· Probability· JAMB

    A card is drawn at random from a pack of 52 playing cards. What is the probability that it is a red king?

    Explanation and discussion

  6. Question 26· Probability· JAMB

    A and B are mutually exclusive events with P(A) = 1/3 and P(B) = 1/4. Find P(A or B).

    Explanation and discussion

  7. Question 27· Probability· JAMB

    The probabilities that A and B pass an examination are 2/3 and 3/4, independently. Find the probability that both pass.

    Explanation and discussion

  8. Question 28· Probability· WAEC

    Two fair dice are thrown. What is the probability that the sum is 10?

    Explanation and discussion

  9. Question 29· Probability· JAMB

    A and B are independent events with P(A) = 0.3 and P(B) = 0.5. Find P(A and B).

    Explanation and discussion

  10. Question 30· Probability· WAEC

    A fair coin is tossed three times. What is the probability of getting three tails?

    Explanation and discussion

  11. Question 31· Probability· JAMB

    If the probability that an event happens is 0.4, the probability that it does not happen is

    Explanation and discussion

  12. Question 32· Probability· WAEC

    Two fair coins are tossed. What is the probability of getting two heads?

    Explanation and discussion

  13. Question 33· Probability· WAEC

    A box has 4 white and 6 black balls. Two are drawn one after the other with replacement. Find the probability that both are white.

    Explanation and discussion

  14. Question 34· Probability· JAMB

    A card is drawn from cards numbered 1 to 30. What is the probability that it is a multiple of 6?

    Explanation and discussion

  15. Question 35· Probability· WAEC

    Two fair dice are thrown together. What is the probability that the sum of the scores is 7?

    Explanation and discussion

  16. Question 36· Probability· JAMB

    A bag contains 3 red and 5 green balls. One ball is drawn at random. What is the probability that it is not red?

    Explanation and discussion

  17. Question 37· Probability· WAEC

    A letter is chosen at random from the word MATHEMATICS. What is the probability that it is M?

    Explanation and discussion

  18. Question 38· Probability· JAMB

    Two fair coins are tossed together. What is the probability of getting exactly one head?

    Explanation and discussion

  19. Question 39· Probability· JAMB

    A number is chosen at random from 1 to 20. What is the probability that it is a multiple of 4?

    Explanation and discussion

  20. Question 40· Probability· JAMB

    Two fair dice are tossed. Find the probability that the sum is less than 4.

    Explanation and discussion

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