document.write( "Question 437571: Dawn, Serigo, Katrina, Sarah, Ian, Maria, and Kim have all been invited to a dinner party. They arrive randomly and each person arrives at a different time.
\n" ); document.write( "a) In how many ways can they arrive?
\n" ); document.write( "b) In how many ways can Dawn arrive first and Kim last?
\n" ); document.write( "c)Find the probability that Dawn will arrive first and Kim last.
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Algebra.Com's Answer #302698 by stanbon(75887)\"\" \"About 
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Dawn, Serigo, Katrina, Sarah, Ian, Maria, and Kim have all been invited to a dinner party. They arrive randomly and each person arrives at a different time.
\n" ); document.write( "a) In how many ways can they arrive?:: 7!
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\n" ); document.write( "b) In how many ways can Dawn arrive first and Kim last?::1*5!*1 = 5!
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\n" ); document.write( "c)Find the probability that Dawn will arrive first and Kim last.
\n" ); document.write( "Ans 5!/7! = 1/(7*6) = 1/42
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\n" ); document.write( "cheers,
\n" ); document.write( "Stan H.
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