Question

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

Answer 1

`\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)`