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OAU Post-UTME Mathematics 2021 (Batch B) Question 20

Question 20

Probability

In a single throw of two fair coins, find the probability that one head and one tail appear.

  1. A.4/3
  2. B.¾
  3. C.½
  4. D.2/9
Show the answer and explanation

Answer: C (½)

Explanation

The outcomes are HH, HT, TH, TT. Two of the four (HT, TH) have one head and one tail, so the probability is 2/4 = ½.