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Ex 15.1, 10 - A piggy bank contains hundred 50 p coins, fifty - Bag/ Box / Piggy bank

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Ex 15.1, 10 - Chapter 15 Class 10 Probability - Part 2

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Ex15.1, 10 A piggy bank contains hundred 50 p coins, fifty Rs 1 coins, twenty Rs 2 coins and ten Rs 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin will be a 50 p coin? Total number of coins in a piggy bank = 100 + 50 + 20 + 10 = 180 Number of 50 p coins = 100 Probability of getting a 50 p coin = ( 50 )/( ) = 100/180 = 5/9 Ex15.1, 10 A piggy bank contains hundred 50 p coins, fifty Rs 1 coins, twenty Rs 2 coins and ten Rs 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin (ii) will not be a 5 coin? Total number of coins in a piggy bank = 180 Number of 5 coins = 10 P(not getting a 5 coin) = 1 P(getting a 5 coin) P(getting a 5 coin) = ( 5 )/( ) = 10/180 = 1/18 P(not getting a 5 coin) = 1 P(getting a 5 coin) = 1 1/18 = 17/18

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.