Question: (a) At the press of a button, a random number generator is used in a computer game to display a red stone with probability 0.1

(a) At the press of a button, a random number generator is used in a computer game to display a red stone with probability 0.1 or a blue stone with probability 0.9 what is the probability of getting two red stones and one blue stone when the button is pressed 3 times without replacement?

(b) repeat part (a) if the button is pressed 10 times with replacement?

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