Five. Four to decide which way the bulb ought to turn, and . . .
or
Billllyuns and billllyuns. Light bulbs are part of the interstellar "goo" that pervades our universe; they are star stuff.
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Twenty. One to hold the bulb, two to turn the ladder, and seventeen on the guest list.
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Five. One to change the bulb and eleven to say they could do it faster.
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They had reservations.
or