In a certain Algebra and Trigonometry class, there are 10 male freshmen, 6 fernale freshmen, 4 male sophomores, and 16 female sophomores. If a person is selected randomly from the group, find the probability that the selected person is a freshman or female 19
(Type an integer or a simplified fraction.)
There are a total of 10 male freshmen + 6 female freshmen + 4 male sophomores + 16 female sophomores = 36 students in the class.
The probability of selecting a freshman or a female is (10 + 6)/36 = 16/36 = 4/9. Answer: \boxed{\frac{4}{9}}.