#3**+10 **

P stands for permutations and C stands for combinations.

Here is a introductory video clip on combinations and permutation.

https://www.youtube.com/watch?v=hJRXKq2GEo8

3C2 means how many combinations of 2 can you get from 3 objects I'll call them A,B,C

Well you can get AB, AC, or BC so 3C2=3

3P2 means how many permutations of 2 can you get from the 3 objects

Well with permutations order counts so you can have

AB or BA, AC or CA, BC or CB SO 3P2=6

nCr means how many combinations of r objects can you take from n objects.

nPr means how many permutations of r objects can you take from n objects.

Melody
Apr 7, 2015

#3**+10 **

Best Answer

P stands for permutations and C stands for combinations.

Here is a introductory video clip on combinations and permutation.

https://www.youtube.com/watch?v=hJRXKq2GEo8

3C2 means how many combinations of 2 can you get from 3 objects I'll call them A,B,C

Well you can get AB, AC, or BC so 3C2=3

3P2 means how many permutations of 2 can you get from the 3 objects

Well with permutations order counts so you can have

AB or BA, AC or CA, BC or CB SO 3P2=6

nCr means how many combinations of r objects can you take from n objects.

nPr means how many permutations of r objects can you take from n objects.

Melody
Apr 7, 2015