Given P(A) =and P(B) =. Find P(A or B), if A and B are mutually exclusive events.


Given $P(A)=\frac{3}{5}$ and $P(B)=\frac{1}{5} .$ Find $P(A$ or $B)$, if $A$ and $B$ are mutually exclusive events.


Here, $P(A)=\frac{3}{5}, P(B)=\frac{1}{5}$

For mutually exclusive events A and B,

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

$\therefore P(A$ or $B)=\frac{3}{5}+\frac{1}{5}=\frac{4}{5}$

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