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    				| 1. | Let X denote the number of hours you study during a randomly selected school day. The probability that X take the values of x has the following form, where k is some unknown constant. P(X=x)={(0.1 "if" x=0),(kx, "if" x=1 "or"2),(k(5-x),"if"x=3"or"4),(0,"otherwise"):} Find: (i) k (ii) the probability that you study exactly two hours, (iii) the probability that you study at most two hours. | 
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