Example
A problem in statistics is given to three students A,
B and C whose chances in solving it are  respectively.
What is the probability that the problem will be solved ?
Solution
: The probability that A can solve the problem = 1/2
The probability that B cannot solve
the problem = 1 - 1/2 = 1/2
Similarly the probabilities that B and C cannot
solve problem are
 respectively.
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