Question

Ms. White has 15 students in her first grade class. Troy is the line leader for the week, and Mackenzie is last because she was the line leader last week. In how many different ways can Ms. White's class line up for lunch this week?

Answer 1

The correct answer is 13!

Explanation:

I just did this, it is not 15! because there are two kids who have to be in a certain spot no matter what else the other kids do so 15-2=13

13 kids can change positions so 13!

Answer 2

Ms. White class can line up for lunch in 1307674368000 ways

Explanation:

n! = 15!

= 1.307674368 E+12

= 1307674368000