The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a blue marble?

Answer 1

that would simply be 2/11 x 2/11 = 4/121

Answer 2

Rami draws a chip from the bag without looking. He keeps the chip and then draws antoher one from the bag. What is the probability that both chips are blue? 3 yellow, 2 brown, 5 green, 4 blue, an 2 red.