0 like 0 dislike
203 views
Suppose a coin is tossed 3 times. What is the probability of obtaining exactly one head?
| 203 views

0 like 0 dislike
P(One head exactly) $=\dfrac{1}{2} \times \dfrac{1}{2} \times \dfrac{1}{2} \times \dfrac{3}{8}$

The first $\dfrac{1}{2}$ is the probability of getting a head. The other two halfs are the probability of NOT getting a head. The 3 is because the head could appear on either the first OR second OR third throw.
by Diamond (58,513 points)

1 like 0 dislike
0 like 0 dislike
0 like 0 dislike
1 like 0 dislike
1 like 0 dislike
0 like 0 dislike
0 like 0 dislike
4 like 0 dislike
1 like 0 dislike
0 like 0 dislike
0 like 0 dislike
0 like 0 dislike
0 like 0 dislike
1 like 0 dislike