Question

Two boxes contain 4 and 16 balls respectively. Two balls in the first box and four in the second, are black. If a box is chosen randomly and two balls are drawn at random from it, what is the
probability that at least one ball is black if the ball is not replaced?

A) 11/20 B) 43/120 C) 77/120 D) 9/20

Answer 1

Answer:

I hope you understand 11/20 is the best way to be a great day for me to be a great day☝☝