Question
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?
Probability — Class 12 Maths Solution
Step-by-step Solution
.: Let the sample space be $= \{ RR,RB,BR,BB\}$ ,
where $R =$ Red ball and $B =$ Black ball.
Since, $X$ represent the number of black balls
$X$ is a random variable which can assume the values 0, 1, 2.
NCERT & Exemplar solution for CBSE Class 12 Mathematics, Probability. Curated by Sachin Sharma. Free for all students.