Question

a bag contains 2 red marbles, 3 green marbles, and 2 black marbles what is the probability of drawing out a black marble

Answer 1

Answer:

P (black)  = 2/7

Step-by-step explanation:

We need to know the total amount of marbles.

2 red + 3 green + 2 black = 7 marbles

P ( black) = number of black marbles / total marbles

              = 2 /7

Answer 2

Answer:

It should be 2:7 (or, written as a fraction 2/7)

Step-by-step explanation: