SOLUTION: find the value of the expression 12P4

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Question 88734: find the value of the expression 12P4
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

Start with the given formula

Plug in n=12 and r=4

Subtract 12-4 to get 8

Calculate 12! to get 479,001,600 (note: if you need help with factorials, check out this solver)

Calculate 8! to get 40,320

Divide 479,001,600 by 40,320 to get 11,880


So 12 choose 4 (where order does matter) yields 11,880 unique combinations

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
12*11*10*9 = 11880
Cheers,
Stan H.