Question

A bag contains:

4 blue marbles

2 green marbles

1 red marble

A marble is chosen at random from the bag and not replaced. Then, a second marble is chosen from the bag. What is the probability that the first marble was red and the second marble was green?

A) 1/7

B) 1/21

C) 2/49

D) 2/6

Answer 1

it is ether B or D cuz

Explanation:

4+2+1=7 marbles

(4/1)+(2/1)+(1/1)=7/21

divide 21 by 7 that would = 3