Dartboard has equally sized slices numbered from to .
Some are grey and some are white.
The slices numbered , , and are grey.
The slices numbered , , , , and are white.
A dart is tossed and lands on a slice at random.
Let be the event that the dart lands on a grey slice, and let be the probability of .
Let not be the event that the dart lands on a slice that is not grey, and let not be the probability of not .

(a)For each event in the table, check the outcome(s) that are contained in the event. Then, in the last column, enter the probability of the event.
Event Outcomes Probability

not

(b)Subtract.
(c)Select the answer that makes the sentence true.
is the same as .