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Number of different colors that appear

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A collection of tickets comes in four colors: red, blue, white, and green. There are twice as many reds as blues, equal numbers of blues and whites, and three times as many greens as whites. I choose 5 tickets at random with replacement. Let X be the number of different colors that appear.

a) Find a numerical expression for P(X > 4).

b) Find a numerical expression for E(X).

Reference no: EM131796255

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