anilorap
There are only six ways that four people can sit around a round table.
draw all six possibilities
and if there are n people sitting around a round table in how many ways can it be dont(and why)
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strobe
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(n-1)!
strobe
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Btw, the question is worded badly, you should scald your teacher.
anilorap
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jajajaaj
anilorap
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so what u mean with n-1 factorial.. how ca i draw them
anilorap
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strobe
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Place your first person in a seat. Then for the first 3 pictures put a different person in the seat clockwise of him. For each of those 3, put the remaining 2 people in different seats. Boom, 6.
anilorap
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aaaaaaaa,,, yea look he said this are cosider the same
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strobe
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Then your teach is wrong, they aren't the same.
anilorap
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:(.
strobe
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They are only the same if you can rotate the table so they look exactly the same.
anilorap
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i think thats what he means
strobe
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Yup, so the two pictures you drew are different as you can't rotate one to make the other.
anilorap
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i got
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strobe
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My apologies, I could only see the first drawing in each of your pictures as my window is small. In your second picture they are the same yes,
strobe
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Okay now for each of those pictures, just swap over the 2 on the bottom and you have your 6.
anilorap
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mm i cant look
anilorap
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|dw:1323555890812:dw|
anilorap
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same
anilorap
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tears
strobe
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Why did you move your A? With your 3 you got, just swap the bottom row and keep the top row the same.
anilorap
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will happen the same
strobe
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ABCD, ABDC, ACDB, ACBD, ADBC, ADCB are your 6 tables. No it won't happen the same.
anilorap
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|dw:1323556226470:dw|
strobe
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What is your picture trying to show? You have 6 different tables there like I told you.
anilorap
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the first three are different arrangements but the three next it looks the same if u turn the table
anilorap
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well no too much
strobe
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You're wrong, look more carefully. You have 6 distinct tables.
anilorap
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yeaa... i can see now
anilorap
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so are we still using (n-1)!