Q. 2 An urn contains red and black balls. Two balls are randomly drawn. Let represent the number of black balls. What are the possible values of Is a random variable ?
B = black balls
R = red balls
The two balls can be selected as BR,BB,RB,RR.
X = number of black balls.
Hence, possible values of X can be 0, 1 and 2.
Yes, X is a random variable.