Check sibling questions

Ex 13.4, 2 - An urn contains 5 red, 2 black balls. Two balls - Ex 13.4

Ex 13.4, 2 - Chapter 13 Class 12 Probability - Part 2

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Transcript

Question 2 An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the number of black balls. What are the possible values of X? Is X a random variable ? When two balls are drawn from the urn, possible outcomes are : Sample Space S = {RR, BB, BR, RB} Let X : number of black balls Hence values of X can be 0, 1, 2 Hence X = {0, 1, 2} Thus, X is a real valued function whose domain is sample space Hence, X is a random variable

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.