SOLUTION: In my Tae Kwon Do class, there are three black belts, three red belts, two blue belts, two green belts, and six yellow belts. If the sensei selects a student at random to lead the

Algebra ->  Probability-and-statistics -> SOLUTION: In my Tae Kwon Do class, there are three black belts, three red belts, two blue belts, two green belts, and six yellow belts. If the sensei selects a student at random to lead the       Log On


   



Question 1170275: In my Tae Kwon Do class, there are three black belts, three red belts, two blue belts, two green belts, and six yellow belts. If the sensei selects a student at random to lead the warm-up, find the probability as a reduced fraction that the person is
(a) either a black belt or a blue belt.
The probability that the student is either a black belt or a blue belt is_______

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
16 belts
3 are black and 2 are blue
probability of or is probability of each added minus probability of both. Both can't happen at once, so prob. is 5/16.