Robin tosses a fair coin and then draws a ball from a bag that contains one red, one blue, and one green ball. what are the possible outcomes for the experiment.

There are 2 sides to a coin so 2 outcomes so far
then 3 balls to chose from so 3 times as many

so
h=heads
t=tails
r=red
b=blue
g=green

I will put them into slots where column 1 is coins and column 2 is color of ball

1, 2
h, r
h, b
h, g
t, r
t, b
t, g
there are 6 possible outcomes

another way is to multiply all the choices together so 2 coin  choices and 3 ball choices so 2 times 3=6