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(i) An urn contains 7 red and 3 black ba...

(i) An urn contains 7 red and 3 black balls. Two balls are drawn one after another without replacement. What is the probability that the second ball is red if it is know that the first ball drawn is red.
(ii) A box contains 8 red and 10 green balls. Two balls are drawn one after another without replacement. What is the probability that the second ball is green if it is know that the first ball drawn is red.

Text Solution

Verified by Experts

The correct Answer is:
`(i) (2)/(3)` `(ii) (10)/(17)`
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