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Help me please asap !!!!!!!!!!!!!!!

Help me please asap !!!!!!!!!!!!!!!-example-1
User Luqmaan
by
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1 Answer

4 votes

Answer:


\large\boxed{(5)/(11)}

Explanation:


\text{Use}\ P(A\ \cup\ B)=P(A)+P(B)-P(A\ \cap\ B).\\\\\text{We have:}\\\\P(A)=(4)/(11),\ P(B)=(3)/(11),\ P(A\ \cup\ B)=(2)/(11).\\\\\text{Substitute:}\\\\(2)/(11)=(4)/(11)+(3)/(11)-P(A\ \cap\ B)\\\\(2)/(11)=(7)/(11)-P(A\ \cap\ B)\qquad\text{subtract}\ (7)/(11)\ \text{from both sides}\\\\-(5)/(11)=-P(A\ \cap\ B)\qquad\text{change the signs}\\\\P(A\ \cap\ B)=(5)/(11)

User Jpbochi
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