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JAMB Mathematics 1984 Question 9

Question 9

Probability

Bola chooses at random a number between 1 and 300. What is the probability that the number is divisible by 4?

  1. A.1/3
  2. B.1/4
  3. C.1/5
  4. D.4/300
  5. E.1/300
Show the answer and explanation

Answer: B (1/4)

Explanation

Every fourth number is divisible by 4 (4, 8, …, 300), which is 75 numbers out of 300, so the probability is ¼.