Question

Shayla and Carlos each have a bag that contains five green marbles five red marbles and 10 yellow marbles the marvels are all the same size and shape which expression represents the probability that Shayla will select two red marbles

Answer 1

Answer:

5/(5+5+10)*(4/(4+5+10)

Step-by-step explanation:

there are 20 marbles, 5 red ones. there is 5/20 chance or 1/4 chance you draw a red one. Then if you do draw a red one, there are 4 red ones left in 19 marbles, so you multiply (1/4)*(4/19)