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A bag has 6 red marbles, 2 blue marbles,5 green marbles, 3 marbles are randomly drawn, what is the probability of all 3 marbles being red.? X is a random variable with moment-generating function Mx(t) = 1/3(e^7t+2e^t). If Y=2X-4, find the moment generating function, My(t).? How to Find x if m∠2 = 1 + 28x and
m∠XVW = 59x − 1.? Obtain the electrostatic force between two protons 10×10^-m apart in a material with negative permitivity of 0.85? Relative velocity - river problem.?

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