Question

There are 10 blue and 5 red balls in a bag. A ball is randomly drawn and its colour is noted and put back in the bag. Again a second ball is drawn and its colour is noted. Let a random variable XX be defined as
X = 1, if both balls are of same color
X = 0, if both balls are of different color
How many draws will result in X = 1?
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Answer 1

Answer:

X=2

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