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WAEC Further Mathematics 2021 Question 17

Question 17

Probability

A fair die is tossed 60 times and the results are recorded in the table.
Number on Die: 1, 2, 3, 4, 5, 6
Frequency: 15, 10, 14, 2, 8, 11
Find the probability of obtaining a prime number

  1. A.7/30
  2. B.1/6
  3. C.7/15
  4. D.8/15
Show the answer and explanation

Answer: D (8/15)

Explanation

Primes on a die are 2, 3 and 5: 10 + 14 + 8 = 32 of 60 throws. P = 32/60 = 8/15.