Question: U have two urns - one urn has 5 red and 5 black balls and another urn has 2 red and one black ball. U

U have two urns - one urn has 5 red and 5 black balls and another urn has 2 red and one black ball.

U draw a ball and it's black what is the probability it came from the second urn?

The probability of selecting each URN is 1/2

a 0.4
b 0.45
c 0.3
d NONE OF THE ABOVE

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