A bag contains 7 red marbles, 11 blue marbles, and 7 yellow marbles. Two marbles are selected, one at a time, without replacement.

Question

A bag contains 7 red marbles, 11 blue marbles, and 7 yellow marbles.
Two marbles are selected, one at a time, without replacement.
Find the probability that the first marble is blue and the second marble is red.
Express your answer as a decimal, rounded to the nearest hundredth.
1 pts
Ounction 3

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Thu Nguyệt 5 years 2021-07-23T18:45:10+00:00 1 Answers 15 views 0

Answers ( )

  1. bonexptip
    0
    2021-07-23T18:46:48+00:00
    Reply

    Answer:

    the total of marbles = 7 red + 11 blue + 7 Yellow

    = 25 marbles

    P ( b n r) = 11/25 + 7/24

    =0.732

    Step-by-step explanation:

    1. find the total marbles

    2. find the probability of each without replacement means the demoinator will reduce

    3.add the two probability

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