math problem having to do with letter arrangements

Test Preparation
1

<p>SAT math problem
what was the answer to that problem that went like "3 letters can be arranged into 6 diff. ways, how many more arrangements can be made with 4 letters than with 3 letters??"
was it 12?</p>

2

<p>it was 4<em>3</em>2 - 3*2 = 18</p>

3

<p>was that "e" answer choice (b/c i remember putting e but someone told me it was 12, guess they are wrong)??</p>

4

<p>yeah grad, i think it was E</p>

5

<p>and so "d" answer choice was 12??</p>

6

<p>afffffirmative</p>