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Difficulty Level:

Medium

MCQ

Events $Q$ and $R$ are independent events, such that $\frac{P(Q \cap R)}{P(R)}=\frac{4}{5}$ Which probability is equal to $\frac{4}{5}$ ?

Select all that apply :

${P}({Q})$

${P}({R})$

${P}({Q} \cap R)$

${P}({Q} \cup R)$

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