A jar has 3 red marbles and 9 blue ones. If you randomly pick a marble without replacing it and then select another, what is the

Question

sveta [45]

3 years ago

10

A jar has 3 red marbles and 9 blue ones. If you randomly pick a marble without replacing it and then select another, what is the

fractional probability of getting 2 blue?

Mathematics

2 answers:

Nostrana [21] · Answer 1 · 2021-11-18T14:32:19+03:00

Well if the person picked a blue marble the first time that would have been a 1/3 chance the 1 would be the blue marble and the 3 would be the red.

if they then picked another marble it would have been again 1/3 assuming that they had picked a blue marble, to begin with

i hope this makes sense to anyone really (cuz it did in my mind) ;)

GaryK [48] · Answer 2 · 2021-11-18T13:04:31+03:00

GaryK [48]3 years ago

5 0

The probability of picking two blue would be 2/9 because you would use the 2 out of the 9