<p>I just suck when it comes to probability. I can never get it straight. Sometimes I don't know when to use one or the other (I know that Combinations- order isn't important and perm-order is important) but still... Is anyone of you REALLY good at these? How did you master it?</p>
<p>i think that combinations and permutations are on your calculator. i cant remember exactly where though.</p>
<p>permutation and combinations are on calculator................press shift then press number(nPr)number for permutations and number(nCr)number for combinations........................Its general but its similar in most of the scientific calculator</p>
<p>Well, I know how to compute combinations and permutations, but I don't know how to incoporate them into word problems. Sometimes you add, multiply, etc. prem and combs...</p>
<p>permutation is ordered but combination is unordered.</p>