A) 0.39
B) 0.61
C) 0.72
D) 0.28
Correct Answer: A
Solution :
[a] \[P\left( A \right)=0.25\] \[P\left( B \right)=0.50\] \[\left( A\cap B \right)=0.14\] \[\therefore P\left( A\cup B \right)=P\left( A \right)+P\left( B \right)-P\left( A\cap B \right)\]\[=0.25+0.50-0.14=0.75-0.14=0.61\] Required probability \[=P\left( A\cup B \right)\] \[=1-P\left( A\cup B \right)=1-0.61=0.39\] Hence, option [a] is correct.You need to login to perform this action.
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