WAEC Mathematics 1993 Question 50

Question 50

Probability

A die is rolled 200 times. The outcomes obtained are shown in the table below.
Number: 1, 2, 3, 4, 5, 6
No. of times: 25, 30, 45, 28, 40, 32
What is the probability of obtaining a number less than 3?

  1. A.0.125
  2. B.0.150
  3. C.0.275
  4. D.0.500
  5. E.0.725
Show the answer and explanation

Answer: C (0.275)

Explanation

1 or 2 came up 25 + 30 = 55 times out of 200: 55/200 = 0.275.