The chess clubs of two schools consist of, respectively, 8 and9 players. Four me

Question

The chess clubs of two schools consist of, respectively, 8 and9 players. Four members from each club are randomly chosen toparticipate in a contest between the two schools. The chosenplayers from one team are then randomly paired with those from theother team, and each pairing plays a game of chess. Suppose thatRebecca and her sister Elise are on the chess clubs at differentschools. What is the probability that (a) Rebecca and Elise will be paired? (b) Rebecca and Elise will be chosen to represent theirschools but will not play each other? (c) either Rebecca or Elise will be chosen to represent herschool? The chess clubs of two schools consist of, respectively, 8 and9 players. Four members from each club are randomly chosen toparticipate in a contest between the two schools. The chosenplayers from one team are then randomly paired with those from theother team, and each pairing plays a game of chess. Suppose thatRebecca and her sister Elise are on the chess clubs at differentschools. What is the probability that (a) Rebecca and Elise will be paired? (b) Rebecca and Elise will be chosen to represent theirschools but will not play each other? (c) either Rebecca or Elise will be chosen to represent herschool?

Explanation / Answer

in part b) how is the probablility that they will play eachother 3/4? Thanks!

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