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Unilorin Post-UTME Mathematics 2022 (Model questions) Question 15

Question 15

Probability

A box containing 10 black, 4 green and 6 yellow pens. What is the probability of picking a yellow pen with eyes closed?

  1. A.1/5
  2. B.7/10
  3. C.3/10
  4. D.1/2
Show the answer and explanation

Answer: C (3/10)

Explanation

There are 20 pens and 6 are yellow, so P = 6/20 = 3/10.