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A jar 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 23 Find the number of blue balls in the jar. - Mathematics

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Question

A jar 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` Find the number of blue balls in the jar.

Sum
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Solution

Total number of marbles = 24

Let the number of green marbles = x

Number of blue marbles = 24 – x

P(green marbles) = `x/24`

According to Question,

`x/24=2/3`

x = 16

Total number of green marbles = 16

Total number of blue marbles = 24 – 16 = 8

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Chapter 15: Probability - Exercise 15.2 [Page 312]

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NCERT Mathematics [English] Class 10
Chapter 15 Probability
Exercise 15.2 | Q 5. | Page 312
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