Question

There are 3 blue marbles, 6 red marbles, 2 green marbles and 1 black marble in a bag. You choose a marble, REPLACE it, and choose another. Find each probability

PLEASE HELP IM STRUGGLING
7) P (green and black) __
8) P (green, red) __
9) P (red, red) __

Answer 1

What the person above me said

Answer 2

Explanation:

prob blue = 3/12 = 1/4

since you are replacing ,

prob(blue, blue) = (1/4)(1/4) = 1/16