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10 Aug 2006, 15:30
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I can't seem to answer this one:
Tom is making a CD containing 10 of his favorite songs. He has chosen 2 bues songs and 8 rock songs to be on the cd. The blues songs will be the first and the last songs. How many different orderings of songs on the CD are possible?
thanks.
Tom is making a CD containing 10 of his favorite songs. He has chosen 2 bues songs and 8 rock songs to be on the cd. The blues songs will be the first and the last songs. How many different orderings of songs on the CD are possible?
thanks.
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10 Aug 2006, 15:39
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I am still struggling my way through this P&C problems.
But i will post my replu either ways it is good to argue about approaches any ways.
8 of the songs in the middle have 8! ways of arranging
The other two songs have two different displays(first ,last) or l(ast and first)
Thus total possibilities are 8!*2
Hope this is right
But i will post my replu either ways it is good to argue about approaches any ways.
8 of the songs in the middle have 8! ways of arranging
The other two songs have two different displays(first ,last) or l(ast and first)
Thus total possibilities are 8!*2
Hope this is right
