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Box 1 contains 3 Red balls and 1 Blue balls, while Box 2 contains 1 Red Ball and 1 Blue ball. A coin is tossed. If it lands a Head, Box 1 is selected. Otherwise Box 2 is selected. One ball is drawn at random from the chosen Box.What is the probability that the drawn ball is Red?

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Box 1 contains 3 Red balls and 1 Blue balls, while Box 2 contains 1 Red Ball and 1 Blue ball. A coin is tossed. If it lands a Head, Box 1 is selected. Otherwise Box 2 is selected. One ball is drawn at random from the chosen Box.



What is the probability that the drawn ball is Red?

If the coin is Head ------> Box 1

the probability that the drawn ball is Red is

P=3/4

if the coin is not head -----> Box 2

the probability that the drawn ball is Red is

P=1/2

User Debjit Bhowmick
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