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Nakul jha
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Asked: 2020-10-29T05:56:24+00:00 In:

Five cards—the ten, jack, queen, king and ace of diamonds, are well-shuffled with their face downwards. One card is then picked up at random. (i) What is the probability that the card is the queen? (ii) If the queen is drawn and put aside, what is the probability that the second card picked up is (a) an ace? (b) a queen?

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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:15

2020-2021cbsechapter 15class10mathematicsncertprobability
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    2 Answers

    1. Best Answer

      (i) Total number of cards = 5
      Total number of queens = 1
      P(getting a queen) = (Number of favourable outcomes)/(Number of total possible outcomes) = 1/5
      (ii) When the queen is drawn and put aside, the total number of remaining cards will be 4.
      (a) Total number of aces = 1
      P(getting Ace) = (Number of favourable outcomes) = 1/4
      (b) As queen is already drawn, therefore, the number of queens will be 0.
      P(getting a queen) = (Number of favourable outcomes)/(Number of total possible outcomes) = 0/4 = 0

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    2. 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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