Find the total number of 9 digit numbers which have all the digits dif

1.	Find the total number of 9 digit numbers which have all the digits different [IIT 1982]
A.	\[9\times 9\ !\]
B.	\[9\ !\]
C.	10!
D.	None of these
Answer» B. \[9\ !\]

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Find the total number of 9 digit numbers which have all the digits different [IIT 1982]

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