What is the value of 12C4?

A.
495

B.
48

C.
3

D.

11,880

Question

What is the value of 12C4?
  
 
 

 
 

  

  A. 
  495   
   

 
 

  

  B. 
  48   
   

 
 

  

  C. 
  3   
   

 
 

  

  D. 
 
11,880

anonymous · Answer

a big explosion

anonymous · Answer

-_-

amistre64 · Answer

12 C 4 is notation, what do you define it as?

anonymous · Answer

im not sure

amistre64 · Answer

another way to write it is:

12 P 4
------
   4!

amistre64 · Answer

its your material, you have to have some idea (right or wrong) to work with :)

anonymous · Answer

well idk the formula for the P or C

amistre64 · Answer

P is simpler,  for example,  4P2  is simply starting at 4, and picking 2 numbers in descending order to multiply ...  4P2 = 4*3 = 12

4C2 is equal to (4P2)/2!  is how we can relate them, as long as we understand what 2! means

amistre64 · Answer

k! is a way to say kPk ... 

in your case,  lets start with 12P4:  12.11.10. 9

4! = 4P4 = 4.3.2.1


now we have a simple division problem to assess


12.11.10. 9
----------
   4.3.2.1