Answer
$0$
Work Step by Step
We know that $P(\text{A or B})=P(A)+P(B)-P(\text{A and B})$.
Hence here: $P(\text{A and B})=P(A)+P(B)-P(\text{A or B})=\frac{4}{52}+\frac{16}{52}-\frac{20}{52}=0$
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