what is (r-1)! (factorial)?
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Answered by
8
The factorial of any number is that you can call something that number has times (multiple) factorial of same number.
For example
10! = 10 × 9!
For example
10! = 10 × 9!
Anu726:
but wht is( r-1 )!
It's a positive integer ( r)
You can consider it
wht is n!
is it something like (n-1) (n-2).....3x2x1
??
yes it's rule
so is there any rules to write (r - 1 ) !
is it like (r-1)(r-2).....3x2x1 or something else ?
Answered by
5
Just subtract one from every term and multiple with the previous one until u get 1.
Hope this will help u... :-)
Hope this will help u... :-)
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