Ex 15.2, 5 (Optional) - A jar contains 24 marbles, some are green

Ex 15.2, 5 (Optional) - Chapter 15 Class 10 Probability - Part 2

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Question 5 A jar contains 24 marbles, some are green and other are blue. If a marble is drawn at random from jar, the probability that it is green is 2/3 . Find the number of blue balls in the jar. Total number of marbles = 24 Let number of green marbles = x Then, Number of blue marbles = 24 x Given, probability of drawing a green marbles = 2/3 ( )/( ) = 2/3 /24 = 2/3 = 2/3 24 = 2 8 = 16 Number of green marbles = = 16 Number of blue marbles = 24 x = 24 16 = 8

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.