SillyEve
SillyEve
09.12.2019 • 
Chemistry

Events a and b are disjoint. find p\left(a\ \text{or}\ b\right) when p(a)=\frac{1}{3}

and $p\left(b\right)=\frac{1}{4}

. express your answer as a fraction in simplest form.

p\left(a\ \text{or}\ b\right)=

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