Question

Help please

A bowl contains 3 red, 8 blue, and 7 black beads. Margaret randomly selects 3 beads. Find the probability of getting a red, blue, and black marble, in that order.

A. dependent; 204/7 B. independent; 7/243
C. independent; 1/68 D. dependent; 7/204

Answer 1

It sounds like you are not replacing the marbles, so that would make the events dependent.

Which means

P(red, blue, black) = P(red)*P(blue)*P(black)

P(red, blue, black) = P(red)*P(blue, take out 1)*P(black, take out 2)

P(red, blue, black) = (3/18)*(8/17)*(7/16)

I'll let you finish

Answer 2

i got 7/? i dont know what the diometor is?

Answer 3

how did you get 7

Answer 4

i kept dividing and i got 7

Answer 5

18*17*16 = 4896

Answer 6

3*8*7 = 168

Answer 7

yeah I kept dividing from 168

Answer 8

168/4896

42/1224 ... divide both parts by 4

21/612 ... divide both parts by 2

7/204 ... divide both parts by 3

Answer 9

And this is if the beads aren't replaced

Answer 10

Oh okay