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Phrases Previous Year Questions (PYQs)
Phrases Probability Conditional Bays PYQ
Phrases PYQ
Go to Discussion
Phrases Previous Year PYQ Phrases NIMCET 2009 PYQ
A and B are independent witnesses.
Probability A speaks the truth = $x$,
Probability B speaks the truth = $y$.
If both agree on a statement, the probability that the statement is true is:
Go to Discussion
Phrases Previous Year PYQ Phrases NIMCET 2009 PYQ
Solution
Both agree and the statement is true: Probability = $xy$Both agree but the statement is false Probability = $(1-x)(1-y)$
So required probability:
$\dfrac{xy}{xy + (1-x)(1-y)}$
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