Question

Caley has a bag that contains 9 blue marbles and 13 yellow marbles. She selects a marble at random, and then, without replacing the first one, selects another marble at random.

What is the probability that Caley selects a blue marble and then a yellow marble? Round your answer to the nearest percent.

P(blue and yellow) ≈ %

Answer 1

@Compassionate @yuri_modoka

Answer 2

@HelpBlahBlahBlah

Answer 3

@MasterprojectHD @TheAsker2002 @toxicsugar22

Answer 4

@DarkMoonZ

Answer 5

@sleepyjess @sethRB26DETT

Answer 6

@amistre64

Answer 7

@Here_to_Help15

Answer 8

@Tootles143

Answer 9

what the probability of picking a blue marble first?

Answer 10

@nincompoop

Answer 11

@JackofallTradez

Answer 12

it need to be shortend like 0.2

Answer 13

The probabilty of the second pull is effected by the results of the first, so we have to work out the probability of dependant events.

P(A|B) = P(AnB)/P(B)

therefore, P(AnB) = P(B) P(A|B)

Answer 14

its not that practical at this stage, but what it mean is:

the probability of the first pull, times the adjustment for the second pull is what we are looking for

Answer 15

P(blue first) = #blue, divided by # marbles

P(yellow second) = #yellow remaining, divided by # of all marbles remaining.

Answer 16

so the answer is 25

Answer 17

no

how many blue marbles are there to start with? and how many marbles are there altogheter to start with?