There are two students, Avani and Aaden, and they can stand in line in two different ways:
1. Avani in front, Aaden behind.
2. Aaden in front, Avani behind.
Therefore, there are two different ways they can stand in line.
Two students, Avani and Aaden, line up one behind the other. How many different ways can they stand in line?
1 answer