SOLUTION: Can someone explain this to me?? There are 12 students waiting to enter a van to go on a trip to the science museum. In how many arrangements (orders) can they enter the van?

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Question 1028631: Can someone explain this to me??
There are 12 students waiting to enter a van to go on a trip to the science museum. In how many arrangements (orders) can they enter the van?

A. 12C1
B. 12P1
C. 12!
Answer by Natolino1983(23) About Me  (Show Source):
You can put this solution on YOUR website!
So, let's imagine that the first student is chosen between the twelve students.
The second is picked between eleven, and so it goes...
So, all options, can be modeled as 12*11*10*9*8*7*6*5*4*3*2*1 =12!