Final answer:
There are 720 ways that these 6 people can stand in line.
Step-by-step explanation:
To determine the number of ways these 6 people can stand in line, we can use the concept of permutations. Permutations represent the number of different arrangements or orders that a set of objects can be arranged.
In this case, we have 6 people, so there are 6 options for the first person in line, 5 options for the second person, 4 options for the third person, and so on.
Therefore, the total number of ways they can stand in line is 6 x 5 x 4 x 3 x 2 x 1 = 720.