<p>currently i’m studying from the kaplan math 2 subject test review book…but i’m not sure if this is a great book to study from b/c i’ve never really heard people who got 800s studying from kaplan…</p>
<p>does anybody know if this book is worth studying from? how about the mcGrawhill book for math 2 subject test? any other suggested books? thankss :)</p>
<p>How many ways can 2 identical red chairs and 4 identical blue chairs be arranged in one row?
I know the answer is 15, but how would you write that in nPr form?</p>
<p>I’d solve the problem as if it were a “how many ‘words’ can you form” problem. </p>
<p>You have the word RRBBBB. To find out the number of arrangements of the word, you do (total number of letters)! / (the number of times a letter repeats)!(the number of times a letter repeats)! (if there are more repeatings letters, continue…)</p>
<p>the kaplan tests are harder,and they’re also much longer. for example, the night before i took the test i did a practice test and i was at #35 after 1 hour; however, i was able to finish the test and briefly look problems over during the real test.</p>