There are 2 choices for the first set, and 5 choices for the second set. Each of the 2 choices from the first set can be combined with each of the 5 choices from the second set. Therefore there are 2 times 5 combinations from the first and second sets. Continuing this reasoning, the total number of unique combinations of one object from each set is:
Five hundred ninety two thousand six hundred eighty two
To answer this you need to read the stem and leaf lot and determine how many values were over 28., Or how many were less than or at 28 and subtract it from 30.
There are 10 teams at 28 or less, so 20 teams are above 28.
The number to the left of the | tells us the tens place of the set of number that come after it.
For example 2|4 7 8 stands for 24, 27, and 28.
If 20 out of 30 were above 28 homeruns, then your probability is 20/30 or 2/3 or 0.667.
