There are 7 yellow, 6 blue, 9 red, and 3 green ribbons in a drawer. Once a ribbon is selected, it is not replaced. Find each probability.
P(a yellow ribbon and then a blue ribbon)

P(a yellow ribbon and then a blue ribbon)

a. 7/100
b. 42/635
c. 7/120
d. 7/125

7/100

Step-by-step explanation:

7 yellow, 6 blue, 9 red, and 3 green ribbons in a drawer

Total ribbons = 25 ribbons

P( yellow) = yellow / total = 7/25

Then not replaced

6 yellow, 6 blue, 9 red, and 3 green ribbons in a drawer

Total ribbons = 24 ribbons

P( blue) = blue / total = 6/24 = 1/4

P(a yellow ribbon and then a blue ribbon) = 7/25 * 1/4 =7/100

A:

Step-by-step explanation:

There are 25 ribbons total. The probability would be out of the 25 ribbons.

(1):

Yellow:

Blue:

Red:

Green:

When removing a ribbon that can't be replace, it'll leave you with a total of 24 ribbons.

(2):

Yellow:

Blue:

Red:

Green:

Multiply {(1) × (2)}:

Yellow: × =

Blue: × =

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step-by-step explanation:

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stops on an even number.