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15-05-2017
Mathematics

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A bag contains 3 red marbles, 5 yellow marbles, and 4 blue marbles. One marble is chosen at random. What is the probability that the chosen marble will not be red

A 3/4

B 1/3

C 1/4

D 1/12

Respuesta :

Cocolette Cocolette

15-05-2017

Sample space 5+3+4=12
Probability that the ball will not be red 5+4=9
9/12 when broken down is = 3/4
so (A) is the answer

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