Question

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a red marble, replacing it, and then picking a black marble?

Answer 1

Add up the total number of marbles you have:

5 + 6 + 4 = 15

How many red marbles do you have? 5, so the probability of selecting a red marble is

5/15 or 1/3

if you replace it, you still have 15 total marbles

How many black marbles do you have? 4, so the probability of selecting a black marble is 4/15

Answer 2

Thank you!

Answer 3

np!