The University of Oregon’s football team has many different uniforms. The coach can choose from four colors of jerseys and pants: green, yellow, white, and black. There are three helmet options: green, white, and yellow. Also, there are the same four colors of rocks and two colors of shoes, black and yellow. How many jersey/pant combinations are there?

There are four choices for jerseys and four choices for pants, so there are 4 x 4 = 16 possible jersey/pant combinations.