# Question

A driving exam consists of 30 multiple-choice questions. Each of the answers is either right or wrong. Suppose that the probability of making fewer than 7 mistakes is 0.23 and the probability of making from 7 to 15 mistakes is 0.41. Find the probability of making:
a. 16 or more mistakes
b. 7 or more mistakes
c. At most 15 mistakes
d. Which two of these three events are complementary? Explain.

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