Question

find the probability of choosing a blue marble,then a red marble if the marbles are not replaced

the bag contains 4 white,3 blue, and 5 red

Answer 1

hello

Answer 2

ell. There's 12 possible outcomes. What is a chance of you getting a blue?
There's a 3/12 chance of getting a blue because there's 3 blue out of the 12 total outcome.
But what is the probability of getting 3 blue marbles in a row?
Well, the probability of getting a blue marble is a 3/12. The probability of getting another blue marble is 3/12 x 3/12. The probability of getting another blue marble is 3/12 x 3/12 x 3/12. Why? Well, the marbes are being replaces. So the chance of getting the same outcome is a same. Except you do 3/12 x 3/12 x 3/12 because that's the probability of getting 3 blue marbles in a row. So:
312×312×312=271728
27/1728 can be simplify to 1/64. So the probability of getting 3 blue marbles in a row is 1/64.
I hope this help!

Answer 3

well*

Answer 4

you explained this well but i didnt have trouble on that one

Answer 5

for some reason this one is more challenging for me