- #1
uiuc2014
- 1
- 0
I just meet some easy problem like this,
Does a monkey have a better chance of rearranging
or
I I I L L N O S to spell I L L I N O I S
E E E E N N S S T to spell T E N N E S S E E ?
For ILLINOIS
there are 3"I",2"L",1"N",1"O",1"S".
So P(Illinois)= 8!/(3!*2!*1!*1!*1!)
My question is that why the answer of ( 8 )*( 5 )*( 3 )*( 2 )*( 1 )
////////////////////////////////////////////( 3 )//( 2)//( 1 )//( 1 )/( 1 )
is exactly 2 times larger than the former one?
(8)
(3)means selecting 3 out of 8
Does a monkey have a better chance of rearranging
or
I I I L L N O S to spell I L L I N O I S
E E E E N N S S T to spell T E N N E S S E E ?
For ILLINOIS
there are 3"I",2"L",1"N",1"O",1"S".
So P(Illinois)= 8!/(3!*2!*1!*1!*1!)
My question is that why the answer of ( 8 )*( 5 )*( 3 )*( 2 )*( 1 )
////////////////////////////////////////////( 3 )//( 2)//( 1 )//( 1 )/( 1 )
is exactly 2 times larger than the former one?
(8)
(3)means selecting 3 out of 8
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