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# Nine prisoners are waiting on a death row. How many

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Manager
Joined: 27 Jul 2003
Posts: 124
Location: Singapore
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Nine prisoners are waiting on a death row. How many [#permalink]  20 Aug 2003, 04:57
Nine prisoners are waiting on a death row. How many different combinations are there to select four of them for today's execution, if both joe and Ted must stay alive?
a. 4 b. 12 c. 35 d. 45 e. 126
Manager
Joined: 02 Jul 2003
Posts: 58
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did I make a mistake isn't 7C4=70.
Manager
Joined: 25 Jun 2003
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Agree..

How many combinations are there if Joe and Ted are to be executed today ?

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Brainless

Manager
Joined: 02 Jul 2003
Posts: 58
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Would need two more peeps to join ted and joe so 7C2=21
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