SOLUTION: A fair coin is tossed four times. Find the probability of obtaining A. a head on the first toss and tails on each of the other tosses? B. Exactly one head?

Question 450883: A fair coin is tossed four times. Find the probability of obtaining
A. a head on the first toss and tails on each of the other tosses?
B. Exactly one head?
Answer by ilana(307) (Show Source): You can put this solution on YOUR website!
There are 2*2*2*2=16 possible outcomes of 4 tosses.
A. Only one of the outcomes is favorable- HTTT. So the probability is 1/16.
B. Four outcomes are favorable- HTTT, THTT, TTHT, TTTH. So the probability is 4/16, or 1/4.
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