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vitfil [10]
3 years ago
8

A bag contains 3 red marbles, 2 blue marbles, and 5 green marbles. What is the probability of selecting a red marble, replacing

it in the bad and then selecting a green marble
Mathematics
1 answer:
RUDIKE [14]3 years ago
8 0

Answer:

3/20

Step-by-step explanation:

The total number of marbles is

3 red marbles+ 2 blue marbles+ 5 green marbles = 10 marbles

P(1st marble is red) = red marbles/total

                                =3/10

We replace the marble so there are still 10 marbles in the bag

P(2nd marble is green) = green marbles/total

                                =5/10 = 1/2

P(1st red, 2nd green) = P(1st marble is red) * P(2nd marble is green)

                                   =3/10 *1/2

                                    =3/20

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