Question

Three marbles, one red (R), one yellow (Y), and one blue (B), are placed in a bag. A fair coin is flipped, and then a marble is drawn out of the bag at random. A tree diagram of the events is shown below.

How many possible outcomes exist?

Answer 1

6

They are:

Red head

Red tail

Yellow head

Yellow tail

Blue head

Blue tail

Answer 2

6

Explanation:

There are 6 possible out comes

The coin can be either heads or tails

The marble can be either red yellow or blue

Outcomes

Heads Red Heads yellow Heads Blue

Tails Red Tails yellow Tails Blue