Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Two balls are selected at random one by one without replacement from a bag containing 4
white and 6 black balls. If the probability that the first selected ball is black, given that the second selected ball is also black, is 
, where 
, then 
is equal to:
Text Solution
Verified by ExpertsThe correct answer is:
B
Bag contains 4 white and 6 black balls
: first ball selected is black
: Second ball is also black
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