Question

in a group of 35 children, 10 have blonde hair, 14 have brown eyes, and 4 have both blonde hair and brown eyes. if a child is selected at random, find the probability that the child has blonde hair or brown eyes

Answer 1

$\frac{14}{35} + \frac{10}{35} - \frac{4}{35} = \frac{4}{7}$