Su Z Doom is testing
out the sound system for the concert tonight. One of the microphones
has been unplugged. If she goes to test the system and first
tries the mike that will not work, she will freak out and cancel
her show. What is the probability that the show will go on as
planned?

Express your answer as a ratio in simplest
form, using a colon to separate the numbers.
Example 3:4.

Sal has forgotten which
part of the tool shed he stored his chainsaw in. What is the
probability that the first door he opens will have the chainsaw
stored in that section?

.

Express your answer as a ratio in simplest
form, using a colon to separate the numbers.
Example 3:4.