There are a bag of 7 marbles: 3 red, 4 green.
if u pick 2 marbles, what is the probability of choosing one green and one red (order doesn't matter)?
Isn't it 3/7 x 4/6 ? . . . . . no
You found the probability of getting a Red, then a Green . . . in that order.
This is the same answer as: .