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WAEC (WASSCE) Mathematics · Statistics and Probability

Probability: WAEC Mathematics Past Questions and Answers

What the WAEC syllabus covers in Probability

Our summary: Working out the chance of events, alone or combined.

  • Experimental and theoretical probability
  • Addition of probabilities for mutually exclusive and independent events
  • Multiplication of probabilities for independent events

Syllabus content © The West African Examinations Council (WASSCE (harmonised West African syllabus)).

WAEC (WASSCE) Mathematics questions on Probability

  1. WAEC 2024A die is tossed once. Find the probability of getting a prime number.
  2. WAEC 2024The probability that Amaka will pass an examination is 3/7 and that Bala will pass is 4/9 . Find the probability that both will pass the examination.
  3. WAEC 2023A number is chosen at random from 40 and 50 inclusive. Find the probability that the number is prime.
  4. WAEC 2023A bag contains 4 white marbles and 3 blue marbles. Another bag contains 5 red and 6 blue marbles. If a marble is picked at random from each bag, find the…
  5. WAEC 2022A local community has two newspapers: the morning tomes and the evening dispatch. The morning times is read by 45% of the households. The Evening Dispatch is…
  6. WAEC 2022Mrs Gabriel is pregnant. The probability that she will give birth to a girl is 1/2 and with blue eyes is 1/4. What is the probability that she will give birth…
  7. WAEC 2021A fair die is tossed twice what is the probability of get a sum of at least 10.
  8. WAEC 2021A box contains 40 identical balls of which 10 are red and 12 are blue. if a ball is selected at random from the box what is the probability that it is neither…
  9. WAEC 2020A box contains 12 identical balls of which 5 are red, 4 blue, and the rest are green. If two balls are selected at random one after the other with replacement…
  10. WAEC 2020A box contains 12 identical balls of which 5 are red, 4 blue, and the rest are green. If a ball is selected at random from the box, what is the probability that…
  11. WAEC 2019A box contains 2 white and 3 blue identical balls. If two balls are picked at random from the box, one after the other with replacement, what is the probability…
  12. WAEC 2019A box contains 5 red, 6 green and 7 yellow pencils of the same size. What is the probability of picking a green pencil at random?
  13. WAEC 2017Two bottles are drawn with replacement from a crate containing 8 Coke, 12 Fanta, and 4 Sprite bottles. What is the probability that the first is coke and the…
  14. WAEC 2017In a class of 45 students, 28 offer chemistry and 25 offer Biology. If each student offers at least one of the two subjects, calculate the probability that a…
  15. WAEC 2016A fair die is thrown two times. What is the probability that the sum of the scores is at least 10?
  16. WAEC 2016A bag contains 5 red and 4 blue identical balls. Id two balls are selected at random from the bag, one after the other, with replacement, find the probability…
  17. WAEC 2015The probability that kebba, Ebou and Omar will hit a target are 2/3 , 3/4 and 4/5 respectively. Find the probability that only Kebba will hit the target.
  18. WAEC 2015A letter is selected from the letters of the English alphabet. What is the probability that the letter selected is from the word MATHEMATICS?
  19. WAEC 2014If a number is selected at random from each of the sets p = 1, 2, 3 and Q = 2, 3, 5 , find the probability that the sum of the numbers is prime
  20. WAEC 2014The probability of an event P happening is 1/5 and that of event Q is 1/4 . If the events are independent, what is the probability that neither of them happens?
  21. WAEC 2013Which of the following is not a probability of Mary scoring 85% in a mathematics test?
  22. WAEC 2012A bag contains 4 red and 6 black balls of the same size. If the balls are shuffled briskly and two balls are drawn one after the other without replacement, find…
  23. WAEC 2011If a number is chosen at random from the set x: 4 x 15 . Find the probability that it is a multiple of 3 or a multiple of 4
  24. WAEC 2010c c No. of pets 0 1 2 3 4 No. of students 8 4 5 10 3 The table shows the number of pets kept by 30 students in a class. If a student is picked at random ftom…
  25. WAEC 2010In an athletic composition, the probability that an athlete wins a 100m race is 1/8 and the probability that he wins in high jump is 1/4 . What is the…

Years with Probability questions in DeeepSolve's question bank

From the past questions DeeepSolve holds, not a count of everything the exam body has set.

  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2019
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
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