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UI Post-UTME Mathematics 2018 (Model questions) Question 27

Question 27

Probability

A die is rolled once. What is the probability of obtaining a prime number or a number greater than 5?

  1. A.2/3
  2. B.2/5
  3. C.1/5
  4. D.1/3
Show the answer and explanation

Answer: A (2/3)

Explanation

Primes 2, 3, 5 or the number 6: four outcomes out of six, 4/6 = 2/3.