Question

Events A and B are disjointed.

P(A) = 4/11 ; P(B) = 3/11.

Find P(A or B).

*Answer Options*

7/11

4/11

3/11

8/11

Answer 1

7/11

Explanation:

Two events are disjoint events if they cannot occur at the same time. It is given that A and B are disjointed events, so A and B cannot occur at the same time i.e. the intersection of two disjoint events will be 0.

For two disjoint events A and B:

P(A or B) = P(A) + P(B)

P(A) is given to be 4/11 and P(B) is given to be 3/11. Using these values in the equation, we get:

P(A or B) =
`(4)/(11)+(3)/(11) = (3+4)/(11)=(7)/(11)`