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Kartik singh
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Asked: 2020-10-29T05:58:51+00:00 In:

A piggy bank contains hundred 50p coins, fifty 1 coins, twenty 2 coins and ten 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 (i) will be a 50 p coin ? (ii) will not be a ` 5 coin?

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NCERT Solutions for Class 10 Maths Chapter 15
Important NCERT Questions
PROBABILITY
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 9.1
Page No:309
Questions No:10

2020-2021cbsechapter 15class10mathematicsncertprobability
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    2 Answers

    1. Get Hindi Medium and English Medium NCERT Solution for Class 10 Maths to download.
      Please follow the link to visit website for first and second term exams solutions.
      https://www.tiwariacademy.com/ncert-solutions/class-10/maths/chapter-15/

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    2. Best Answer

      Total number of coins in a piggy bank = 100 + 50 + 20 + 10 = 180
      (i) Number of 50 p coins = 100
      Probability of getting a 50 paise coin = (Number of favorable outcomes)/(Number of total possible outcomes) = 100/180 = 5/9
      (ii) Number of ₹ 5 coins = 10
      Probability of getting ₹ 5 coin = (Number of favorable outcomes)/(Number of total possible outcomes) = 10/180 = 1/18
      Probability of not getting a ₹ 5 = 1 – 1/18 = 17/18

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