maddog89824 maddog89824

27-10-2016
Mathematics

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A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn at random. What is the probability of first drawing a blue marble and then, without replacing it, drawing a red marble?
A.9/20
B.3/38
C.1/19
D.11/20

Respuesta :

Ausar318 Ausar318

27-10-2016

first: 5/20
second: 6/19

5/20 x 6/19 = 30/380 = 15/190 = 3/38. The answer is B

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