document.write( "Question 384654: show all work.....................\r
\n" ); document.write( "\n" ); document.write( "a disc jockey has 7 songs to play. five are slow songs, and two are fast songs. each song is to be played only once. in how many ways can the disc jockey play 7 songs if\r
\n" ); document.write( "\n" ); document.write( "the song can be played in any oder\r
\n" ); document.write( "\n" ); document.write( "the first song must be a slow song and the last song must be a slow song\r
\n" ); document.write( "\n" ); document.write( "the first two songs must be fast songs
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Algebra.Com's Answer #272306 by edjones(8007)\"\" \"About 
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2 fast and 5 slow songs.
\n" ); document.write( "a)7!=5040 ways
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\n" ); document.write( "b)
\n" ); document.write( "5P2=20 Permutations of the 1st and last
\n" ); document.write( "5!=120 permutation of the middle 5.
\n" ); document.write( "20*5!=2400 ways
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\n" ); document.write( "c) 2*5!=240 ways.
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