# Question: A nuclear power plant has double redundancy on the feed

A nuclear power plant has double redundancy on the feed water pumps used to remove heat from the reactor core. A safely operating plant requires only one of the three pumps to be functional. Define the events A, B, and C as follows:

A: Pump 1 works properly

B: Pump 2 works properly

C: Pump 3 works properly Describe in words the following events:

a. The intersection of A, B, and C

b. The union of A, B, and C

c. The complement of the intersection of A, B, and C

d. The complement of the union of A, B, and C

A: Pump 1 works properly

B: Pump 2 works properly

C: Pump 3 works properly Describe in words the following events:

a. The intersection of A, B, and C

b. The union of A, B, and C

c. The complement of the intersection of A, B, and C

d. The complement of the union of A, B, and C

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