ADDITION RULES OF PROBABILITY
Exercise Problem
Solution
1
A day of the week is chosen at random. What is the probability
of choosing a Monday or Tuesday?
1/7
2/14
2/7
None of the above
2
In a pet store, there are 6 puppies, 9 kittens, 4 gerbils, and
7 parakeets. If a pet is chosen at random, what is the
probability of getting a puppy or a parakeet?
15/26
1/2
11/26
None of the above
3
The probability of a New York teenager owning a skateboard is 0.37,
of owning a bicycle is 0.81, and of owning both is 0.36. If a New York
teenager is chosen at random, what is the probability that he/she owns
a skateboard or a bicycle?
1.18
0.7
0.82
None of the above
4
A number between 1 and 10 is chosen at random. What is the
probability of getting a 5 or an even number?
3/5
1/2
1/5
All of the above
5
A single 6-sided die is rolled. What is the probability of
getting a number greater than 3 or an even number?
1
2/3
5/6
None of the above