Question

A bag contains 4 white, 5 black and 6 red balls. If a ball is drawn at random, then what is the probability that the drawn ball is either white or red ​

Answer 1

Answer:

$\frac{10}{11}$

Step-by-step explanation:

Number of White Balls + Number of Black Balls + Number of Red Balls = 4 + 5 + 6 = 11

=> Total Number of Balls = 11

Probability = $\frac{( Number of Red Balls + Number of White Balls )}{11}$

=> $\frac{( 4 + 6 )}{10}$

=> $\frac{10}{11}$