প্রশ্ন সংশোধন করুন
প্রশ্ন:
A bag contains 7 red, 9 yellow and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red of a black ball.
A bag contains 7 red, 9 yellow and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red of a black ball.