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Find the incorrect statement:...

Find the incorrect statement:

A

If `""^(10)P_(r)=""^(7)P_(r+2)` then r=4

B

`""^(n)P_(n)=lfloor( n)`

C

The number of ways of arranging the letters of the word SARASA is 120.

D

`""^(n)C_(r)=(n!)/((n-r)!r!)`

Text Solution

Verified by Experts

The correct Answer is:
C
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