If three unbiased coins are tossed, then what is the probability of getting one or more heads is
Mathematics · Middle School · Mon Jan 18 2021
Answered on
To find the probability of getting one or more heads when three unbiased coins are tossed, let's consider the possible outcomes:
There are 2 outcomes for each coin toss (either heads or tails). Since each coin toss is independent, the total number of outcomes for three coins is 2×2×2=23=8
2×2×23=8.
Now, let's list the outcomes where we get one or more heads:
- HHT
- HTH
- THH
- HHH
There are 4 favorable outcomes.
Therefore, the probability of getting one or more heads is the number of favorable outcomes divided by the total number of outcomes:
Probability=Number of Favorable Outcomes Total Number of Outcomes = 48=12
Probability=Total Number of Outcomes
Number of Favorable Outcomes = 1/2