Question

When 100 engines are shipped, all of them are free of defects.

A. At least one of the engines is defective.
B. All of the engines are defective.
C. None of the engines are defective.
D. At most one of the engines is defective.

Answer 1

At least one of the engines is defective.

Explanation:

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Answer 2

C. None of the engines are defective.