can someone explain to me what is the difference between combinations and permutations?

Question

unklerhaukus · Answer

the order dosent matter in combinations, it does in permutations

anonymous · Answer

a permutations is an ordered combination

anonymous · Answer

kk thx :)

anonymous · Answer

In addition to UnkleRhaukus...here are some examples: 
Permutations-When order matters: In how many ways can horses in a 10 horse race finish first, second, third =10P3

Combination-When order doesnt matter: how many simple random samples of size 4 can be taken from a population of size 20.=20C4

anonymous · Answer

Hope that helps...

jim_thompson5910 · Answer

Also

n C r = combination

n P r = permutation

and you can connect the two by this formula

n C r = (n P r)/( r! )

which can be rewritten as 

n P r = ( r! ) * (n C r)

anonymous · Answer

im familiar with the formula but it's which one to use :/ but yea i understand thx!

anonymous · Answer

most of the simple random sample questions should be combinations (according to my teacher, lol)...and again if it talks about order permutations (like the race one) , if not..combination

anonymous · Answer

ok thx :)

anonymous · Answer

np