Question

Four different sets of objects contain 2,5, 6, and 7 objects, respectively. How

many unique combinations can be formed by picking one object from each
set?

Answer 1

420 unique combinations

Explanation:

Simply multiply:

2 * 5 * 6

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. So, there are 2 times 5 combinations from the first and second sets.