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A Jar Contains 10 Red Marbles and 30 Blue Marbles

Question 72

Multiple Choice

A jar contains 10 red marbles and 30 blue marbles.A random sample without replacement of n = 3 marbles is selected from the jar.If the first two marbles are both blue,what is the probability that the third marble will be red?​


A) ​10/37
B) ​10/38
C) ​10/40
D) ​8/38

Correct Answer:

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