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

Answer 1

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

= 25 marbles

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

=0.732

Explanation:

1. find the total marbles

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

3.add the two probability