Question

what is the probability that either event a or event b will occur?
start by finding the probability of event a.
p(a) = \frac{?}{17}

Explanation:

Step1: Analyze the probability of event A

The probability of event A consists of two parts: the part only in A and the part overlapping with the other region.
$$P(A)=\frac{9}{17}+\frac{6}{17}$$

Step2: Calculate the sum

Add the two fractions. Since the denominators are the same, add the numerators.
$$\frac{9 + 6}{17}=\frac{15}{17}$$

Answer:

$\frac{15}{17}$