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185-B5-1

Complementary Events

1. Answer each question.

Example
Find the probability of not taking a marble numbered 1 out of the bag.

1 2
1 2

3

a. A spinner is spun once. Find each probability. 13
P(1) P(2) 21

P(not 1) P(not 2)

b. A die is rolled once. Find each probability.
P(4) P(multiple of 3)

P(not 4) P(not a multiple of 3)