Question

A bag contains 3 red balls and 4 black balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is a black ball.

Answer 1

N(S) = 3+4=7

N(B) =4

P(B) = N(B)/ N(S)

P(B) = 4/7 ••••••••••••• IS THE ANSWER....

I THINK SO