Indian Railways
Indian Railway (Hindi भारतीय रेल), abreviado como (Hindi भारे ) IR é um Departamento do Governo da Índia, sob juridição do Ministério das Ferrovias. É encarregado de manter o funcionamento da rede ferroviária da Índia.
Probability when a professor distributes a quiz and homework assignment to a class of n students.
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Need help with this problem. Suppose our lazy professor collects a quiz and a homework assignment from a class of n students one day, then distributes both the quizzes and the homework assignments back to the class in a random fashion for grading. Each student receives one quiz and one homework assignment to grade. (a) What is the probability that every student receives someone else's quiz to grade, and someone else's homework to grade? (b) What is the probability that no student receives both their own quiz and their own homework assignment to grade? In this case, some students may receive their own quiz, and others may receive their own homework assignment. (c) Compute the limiting probability as n approaches infinity in each case.
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