I can't do any permutation in the Barron's mathii tests :(

[sssadi]

<p>I am getting very depressed with the questions involving probabilities, permutations and combinations in the Barron's math level II tests, I have used up 6 of the tests and there is little improvement of my abilities on this topic. After every test I make sure I understand the concept behind the mistaken sum, and every next test I find myself making errors I could not have prevented with what I had learned earlier.
Can you refer me some good websites where I can get a grasp of permutations and combinations involving cards, coins, words, and numbers etc good enough to stand Barron's tests? I can't buy any book now because I live overseas and my test is on Nov 6.</p>

<p>P.S. I have never have studied permutations or combinations before I bought the Barron's book. In the past few days, I have exhausted some possible sources online, such as sparknotes and GMAT questions on these topics. I suppose GMAT questions were helpful, but I am just reverse engineering everything. I hope I can find something that will give a more basic guidance. Thanks for reading.</p>

[kk0494]

<p>I took the Math II test in June and there were no problems with permutations on there, and I’m almost certain there were none on probability either. It did cover a lot of circles and polar though.</p>

<p>The Barron’s book is MUCH harder than the actual test. It also includes a lot of unneeded information. I also had a lot of difficulty with the permutation and probability questions in the book. I kept scoring 600’s on the Barron’s tests but I ended up getting an 800 on the test.</p>

<p>As long as you can do very basic probability, you should be fine.</p>

[sssadi]

<p>Thnx kk0494, very reassuring ;)</p>