What is the probability of tossing a penny and landing on heads three times in a row?
1 Answer
Apr 18, 2016
Explanation:
The probability of getting heads when tossing a penny is:
The probability of getting heads the first and second time is simply the two probabilities multiplied together:
Similarly, the probability of throwing heads 3 times in a row is:
This is equivalent to saying that this is one out of 8 possible outcomes. The 8 possibilities are:
hhh, hht, hth, htt, thh, tht, tth, ttt
and our outcome is one out of 8 equally probable outcomes - so the answer of
