Consider n pairs of husbands and wives, sitting randomly in a row of 2n chairs. What is the probability that each person is sitting beside her/his spouse, and also no two women are adjacent, and no two men are adjacent (i.e., the sexes are alternating)?
Consider n pairs of husbands and wives, sitting randomly in a row of 2n chairs. What is the probability that each person is sitting beside her/his spouse, and also no two women are adjacent, and no two men are adjacent (i.e., the sexes are alternating)?
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Related Book For 
Introduction to Probability
1st edition
Authors: Mark Daniel Ward, Ellen Gundlach
ISBN: 978-0716771098