SOLUTION: a jar contains 7 green, 19 black and 13 pik marbles. A marble is drawn at random. What is the probability of it being a green or black?

Algebra ->  Probability-and-statistics -> SOLUTION: a jar contains 7 green, 19 black and 13 pik marbles. A marble is drawn at random. What is the probability of it being a green or black?      Log On


   

Question 419763: a jar contains 7 green, 19 black and 13 pik marbles. A marble is drawn at random. What is the probability of it being a green or black?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

a jar contains 7 green, 19 black and 13 pink marbles.

 39 marbles in ALL

ONE marble is drawn at random. 

P(being a green 'or' black) = 7/39 + 19/39 = 26/39