Question

A basket contains 3 blue, 5 black and 3 red balls. If 2 balls are drawn at random, what is the probability that one is black and one is red?

Answer 1

hope it will help you

Answer 2

Answer: $\dfrac{3}{22}$

Step-by-step explanation:

Given : A basket contains 3 blue, 5 black and 3 red balls.

Total balls=3+5+3=11

Number of ways to get two balls =$11\times10=110$

Number of ways to select one black and one red ball : $5\times3=15$

If 2 balls are drawn at random, then the probability that one is black and one is red will be :-

$\dfrac{15}{110}=\dfrac{3}{22}$

Hence, the probability that one is black and one is red= $\dfrac{3}{22}$