cryinqchxn cryinqchxn
  • 15-05-2021
  • Mathematics
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3 coins are flipped. What is the probabilty of getting no heads?

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jimthompson5910 jimthompson5910
  • 15-05-2021

Answer:  1/8

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Explanation:

Assuming a fair coin, the probability of getting tails is 1/2. The probability of getting three tails in a row is (1/2)^3 = (1/2)*(1/2)*(1/2) = 1/8

Put another way, there are 8 possible outcomes when flipping three coins. Those outcomes are:

  1. HHH
  2. HHT
  3. HTH
  4. HTT
  5. THH
  6. THT
  7. TTH
  8. TTT

We see that only one occurrence of TTT shows up out of the eight possible outcomes; therefore, the probability of getting TTT is 1/8

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