Abag contains 5 red marbles and 4 green marbles. what is the probability of choosing a red marble then a green marble, without replacement? a.) 25/81 b.) 5/18 c.) 25/72 d.) 20/81

Correct choice is B

Step-by-step explanation:

A bag contains 5 red marbles and 4 green marbles, 9 marbles in total.

The probability of choosing a red marble is

After choosing the red marble, 8 marbles left. Then the probability of choosing  a green marble is

Hence, the probability of choosing a red marble then a green marble, without replacement is

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

26

step-by-step explanation: