Question

If two marbles are removed from the jar, what is

the probability that it is red, white, or blue?

Answer 1

opps

Answer 2

I forgot

Answer 3

Yup, the rest :P

Answer 4

a jar contains 5 marbles, 1 of each of the colors red, white, blue, green,

and yellow

Answer 5

we are referring to that

Answer 6

any ideas?

Answer 7

Well I have two possibilities, are they both taking out at the same time, or one afyer the other?

Answer 8

Mhmm... it should still be the same thing anyways.

Answer 9

3/10 is the answer

Answer 10

I think, first you have to find the number of ways to take 2 marbles out of 5 marbles ( n(S))
then find number of ways to take 2 marbles (which is red, white or blue out of 5 marbles,
it can be, red-white, white-blue, red-blue, ( n(A) )

P(A) = n(A) / n(S)

Answer 11

hmm

Answer 12

dang I misread the question!

Answer 13

you can use combination @luisz

Answer 14

let us see what jiji has to say

Answer 15

You can get 3 colors.... so:

3/5

Next, there is only 3 marbles left and 2 colors you can get.

2/4

3/5 x 2/4 = 6/20 or 3/10

Answer 16

4 marbles left****

Answer 17

ok...

Answer 18

that makes sense

Answer 19

after he picked the first one, he picked another one

Answer 20

the probability that it is red, white, or blue?

Taht means just get any of the 3.

Answer 21

3/5 times 2/4=6/20

Answer 22

Yeah.

Answer 23

that makes sense

Answer 24

ty

Answer 25

I use this way,
A = 3 (red-white, red-blue, white-blue)
S = 5C3 = 10
so, the possibilities is 3/10

Answer 26

That works also.