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If two fair coins are tossed, what is the probability of getting at least one...

Mathematics
JAMB 1985

If two fair coins are tossed, what is the probability of getting at least one head?
  • A. \(\frac{1}{4}\)
  • B. \(\frac{1}{2}\)
  • C. 1
  • D. \(\frac{43}{78}\)
  • E. \(\frac{3}{4}\)
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Correct Answer: Option E
Explanation
Prob. of getting at least one head

Prob. of getting one head + prob. of getting 2 heads

= \(\frac{1}{4}\) + \(\frac{2}{4}\)

= \(\frac{3}{4}\)

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