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What will be the sequence generated by the generating function 4x/(1-x)^2?(a) 12, 16, 20, 24,…(b) 1, 3, 5, 7, 9,…(c) 0, 4, 8, 12, 16, 20,…(d) 0, 1, 1, 3, 5, 8, 13,…This question was addressed to me during an internship interview.The question is from Discrete Probability in portion Discrete Probability of Discrete Mathematics

Answer»

Right answer is (C) 0, 4, 8, 12, 16, 20,…

Easy explanation: The sequence should be 0, 4, 8, 12, 16, 20,…for the generating function 4x/(1-x)^2, when basic generating function: 1/(1-x).



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