Multiple choice

Three unbiased coins are tossed. What is the probability of getting at most two tails or two heads?

  1. $\dfrac{3}{2}$
  2. $\dfrac{3}{4}$
  3. $\dfrac{5}{2}$
  4. $\dfrac{7}{2}$
Reveal answer Fill a bubble to check yourself
B Correct answer
AI explanation

When three unbiased coins are tossed, there are 8 possible outcomes, but two of the options are greater than 1. Assuming standard probability rules for a typo where the question intends exactly two tails or exactly two heads, the favorable outcomes are HTT, THT, TTH, HHT, HTH, and THH. This yields 6 favorable outcomes out of 8, resulting in a probability of 6/8 or 3/4.

Keep practicing — related questions