can any one do number #6,10 & 11......thx very much every one......and show ur steps thnx.....cant thank you enough
[QUOTE=sonymd23]can any one do number #6,10 & 11......thx very much every one......and show ur steps thnx.....cant thank you enough
[qUOTE]
I'm pretty sure you will find the answer to 6 by hunting around this site for
what was said when these questions were previously posted.
RonL
When I look at this thread the old Tex does not render unless I edit aOriginally Posted by Quick
post (make no changes) then save. Is this what everyone else sees
happen ?
RonL
Looking at the printable version also works
This thread shows why I would prefer that the image file be uploaded here
rather than hosted somewhere like PhotoBucket - in that thread the questions
can no longer be seen as the file has been removed from PhotoBucket.
Hello, sonymd23!
however my teacher said thats incorrect......he wrote.....
John on floor: 8c2 x 7c2 x 5c5
" " to door : 8c1 x 8c3 x 5c5
" " as floater : 8c4 x 5c2 x 3c3
Are you sure this what he wrote?
Sorry, but I have no idea what your teacher is doing . . .
None of the expressions make sense . . .
He said "John on floor: "
. . Does anyone else agree that this is totally contrary to any kind of logic?
It says: John is on the floor. .(Hence, Tom is not on the floor.)
Then : we choose two from a group of eight people . . . for what?
. . Why pick two people? .What eight people?
If John is already assigned to the Floor and Tom is not, there are ten people to choose from.
Then : we choose two from a group of six people.
. . Again, why two people . . . what six people?
Since John is already assigned and we've chosen 2 people (in the preceding),
. . then there are nine people to choose from (8, if we exclude Tom).
Finally : take the remaining five people and place them anywhere?
Someone has been sipping way too much coughsyrup . . .
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The problem I had solved was different; it had ten people.
This problem has twelve people:
. . 2 at the door, 4 on the floor, 6 floaters.
Again, John and Tom will not work together.
I'll solve it both ways . . .
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There are three possible assignments for John.
[1] John is at the Door . . . and Tom is not.
The other one person at the Door is chosen from the other 10 people.
. . There are: ways.
The remaining 10 people are assigned to the 4 Floors and 6 Floaters.
. . There are ways.
Hence, there are: ways that John can be at the Door.
[2] John is on the Floor . . . and Tom is not.
The other 3 people on the Floor are chosen from the other 10 people.
. . There are: ways.
The remaining 8 people are assigned to the 2 Doors and 6 Floaters.
. . There are: ways.
Hence, there are: ways that John can be on the Floor.
[3] John is a Floater . . . and Tom is not.
The other 5 Floaters are chosen from the other 10 people.
. . There are: ways.
The remaing 5 people are assigned to the 2 Doors and 4 Floors.
. . There are: ways.
Hence, there are: ways that John can be a Floater.
Therefore, there are: . 9240 ways to assign the positions.
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There are: assignments with no restrictions.
Let's count the ways that John and Tom are together.
Duct-tape them together and we have 11 "people" to assign.
There are three cases . . .
is at the Door.
Then there are ways to assign the other ten people.
is on the Floor.
Then there are ways to assign the other ten people.
is a Floater.
Then there are ways to assign the other ten people.
Hence, there are ways for John and Tom to serve together.
Therefore, there are 9240 ways that John and Tom do not serve together.
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Who is right?
I'm through explaining . . . It's your call . . .
Hello, Malay!
Why did you use:
Please explain.
I thought it was used when some of the things are alike.
You are correct!
The twelve people are different (distinguisable), of course.
But selecting two people for the Door is a combination:
. . The order in which the two people are chosen is not considered.
Then we select 4 people for the Floor from the remaining 10 people:
. . Again, the order of the four names is not important.
Finally, we select 6 people to be Floaters from the remaining 6 people:
. . And their order is ignored . . . so there is only one way.
The total number of assignments is: .
. .