Question

Find the probability for the experiment of drawing two marbles (without replacement) from a bag containing three green, four yellow, and five red marbles such that the marbles are different colors.

Answer 1

with or without the replacement

Answer 2

without replacement

Answer 3

oh its easy

Answer 4

12

Answer 5

but the marbles that you choose need to be different colors, so the choices are 47/132, 47/30, 47/66, 1/6, and 2/3

Answer 6

u have to solve it this way:
if green and yellow marbles are drawn, then it can be done in 3*4 ways=12 ways
similarly: yellow, red---------20
green, red---------15
total 12+20+15 ways=47 ways
u have to select 2 marbles from 12, so it can be done in 12C2=66 ways..
so, probability: 47/66

Answer 7

Thanks so much for your help!

Answer 8

welcome :)