Question

A math class consists of 25 students, 15 male and 10 female. Three students

are selected at random to participate in a probability experiment. Compute the
probability that
a. a male is selected, then two females.
b. a female is selected, then two males.
c. two females are selected, then one male.
d. three males are selected.
e. three females are selected.

Answer 1

Answer:a, 0,293

Step-by-step explanatThe number of ways to get any 3 students from 25 given students is :

25C3 = 2300

Let A be the event that has 1 Male and 2 Female

15C1*10C2=675

The probability of having 1 Male and 2 Female is

675/2300=0.293 ion:

Answer 2

a) 675 b) 1050 c) 675 d)455 e) 120

Explanation: