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Probability question

2004 · Shift 0 · Q90

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PYQ Library
JEE Main
Mathematics
Probability
2004 · Shift 0 · Q90

Probability question

2004 · Shift 0 · Q90

JEE MainMathematicsProbabilityMCQ+4 / −1

The probability that

A

speaks truth is

{4 \over 5},

while the probability for

B

is

{3 \over 4}.

The probability that they contradict each other when asked to speak on a fact is :

A
${4 \over 5}$
B
${1 \over 5}$
C
${7 \over 20}$
D
${3 \over 20}$

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