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at your favorite chinese restaurant, you are arranging name cards for a number of people to sit around a table like this one. since the cards are placed on the rotating lazy susan, the specific chair of a guest does not matter, only who is to their left and right. that is, two namecard arrangements are considered different iff there is a guest whose person on their right or left changes. how many different namecard arrangements are there in these scenarios?
Sagot :
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