Question

16. A bag contains 4 red, 3 green and 5 blue marbles. Three marbles are drawn, one at a time, WITHOUT replacement. Determine the probability the the order in which they are selected is: a. Red, Green,blue

b.blue, green, green?

Answer 1

Explanation:

`P(R,G,B)=(4)/(12) *(3)/(11) *(5)/(10) =(1)/(3) *(3)/(11) *(1)/(2)=(3)/(66) =(1)/(22)`

`P(B,G,G)=(5)/(12) *(3)/(11) *(2)/(10) =(5)/(12) *(3)/(11) *(1)/(5)=(1)/(44)`