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In how many ways can 15 people be seated in a round table

Sagot :

Answer:

First,

we need to select 7 among 15 for sitting around the first round table.

It can be done in (15C7) = 6435 ways.

Now,

the 7 persons can sit around the first round table in {(7 - 1)!} = (6!) = 720 ways for each of the above selection.

Similarly,

the remaining 8 persons can sit around the second round table in

{(8 – 1)!} = (7!) = 5040 ways for each sitting arrangement around the first round table.

So,

the answer is (6435*720*5040).

Step-by-step explanation:

hope it's help