Two, one to call the electrician, and one to mix the drinks.
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Only one, but they get three tech. reports out of it.
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The price of bacon would go up.
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A sponge!
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Fish and ships.
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The barman says "Sorry we don't serve food in here"
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The question is irrelevant, since you couldn't find the dolls even if you knew how many. (Note: Well, this was a good joke in 1983-84. . . .)
or