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(n-1)!

Btw, the question is worded badly, you should scald your teacher.

jajajaaj

so what u mean with n-1 factorial.. how ca i draw them

|dw:1323555254814:dw|

aaaaaaaa,,, yea look he said this are cosider the same
|dw:1323555360660:dw|

Then your teach is wrong, they aren't the same.

:(.

They are only the same if you can rotate the table so they look exactly the same.

i think thats what he means

Yup, so the two pictures you drew are different as you can't rotate one to make the other.

i got
|dw:1323555627767:dw|

Okay now for each of those pictures, just swap over the 2 on the bottom and you have your 6.

mm i cant look

|dw:1323555890812:dw|

same

tears

will happen the same

ABCD, ABDC, ACDB, ACBD, ADBC, ADCB are your 6 tables. No it won't happen the same.

|dw:1323556226470:dw|

What is your picture trying to show? You have 6 different tables there like I told you.

the first three are different arrangements but the three next it looks the same if u turn the table

well no too much

You're wrong, look more carefully. You have 6 distinct tables.

yeaa... i can see now

so are we still using (n-1)!