Answer
$$\frac{16}{52}$$
Work Step by Step
We know from the equation on page 707 that:
$$P(A\ or \ B) = P(A)+P(B)-P(A\ And\ B)$$
Thus, we find:
$$=\frac{1}{13}+\frac{1}{4}-\frac{1}{52}=\frac{16}{52}$$
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