Suppose you flip a penny and a dime. Use the following table to display all possible outcomes.
penny ?
head ?
dime?
head?
tail?
tail?
If each single outcome is equally likely, you can use the table to help calculate probabilities. What is the probability of getting
one head and one tail, on either coin?
P(1 head and 1 tail) -- 2/4=1/2
P(1 head and 1 tail) -3/4
P(1 head and 1 tail)-4/4=1. P(1 head and 1 tail)=1/4