A) \[\frac{12}{15}\]
B) \[\frac{13}{15}\]
C) \[\frac{19}{45}\]
D) None of these
Correct Answer: B
Solution :
(b): \[P(A)=\frac{2}{3},P(B)=\frac{3}{5}\] Required probability \[=P(A\,\,or\,\,B)=P(A\cup B)\] be the events of solving the problem by A or B \[=P(A)\,\,+P(\,B)-P(A)P(B)\] \[=\frac{2}{3}+\frac{3}{5}-\frac{2}{3}.\frac{3}{5}=\frac{13}{15}\]You need to login to perform this action.
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