Three fair coins are tossed. What are the odds in favor
of getting at least 1 head?
10
1.
2.
3.
4.
5.
3 to 1
7 to 1
4 to 1
1 to 4
8 to 1
0%
1
0%
0%
2
3
0%
0%
4
5
After examining a man’s family history, a doctor says
that the odds in favor of the man being bald by age 60
are 9 to 2. What is the probability that the man will be
bald by age 60?
10
1.
2.
3.
4.
5.
2/9
9/2
2/11
9/11
1/4.5
0%
1
0%
0%
2
3
0%
0%
4
5
For each race, racetracks display the odds that each horse will
lose on a large screen called a tote board. Below is the tote
board for a particular race:
Horse 1 2 to 1
Horse 4 7 to 5
Horse 2 15 to 1
Horse 5 1 to 1
Horse 3 3 to 2
Horse 6 5 to 2
What is the probability that horse 4 will win?
1.
2.
3.
4.
5.
5/12
7/12
5/7
2/7
2/5
10
0%
1
0%
0%
2
3
0%
0%
4
5