document.write( "Question 1157465: April, Bill, Carl, and Denise are to be seated at random in a row of four chairs. What is the probability that April and Bill will occupy the end seats? \n" ); document.write( "

Algebra.Com's Answer #780336 by ikleyn(52848) $\"\"$ $\"About$

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document.write( "The number of all possible permutations of 4 persons is 4! = 4*3*2*1 = 24.\r\n" );
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document.write( "The number of all possible arrangements, where A an B occupy the end seats is 2*2 = 4\r\n" );
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document.write( "(two positions for A abd B;  and two positions for C and D).\r\n" );
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document.write( "Therefore, the probability is  P =  = .\r\n" );
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