# A Box Contains 24 Marbles, Some Are Green and Others Are Blue. If a Marble is Drawn at Random from the Jar, the Probability that It is Green is 2/3. the Number of Blue Balls in the Jar Is: - Mathematics

MCQ

A box contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is 2/3. The number of blue balls in the jar is:

• 13

• 12

• 16

• 8

#### Solution

8

Explanation:

Total number of marbles = 24

probability of picking green marbles = 2/3

probability of picking blue marbles = 1 - 2/3 = 1/3

1/3 = "x"/24

x = 8

Concept: Probability (Entrance Exam)
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