Actual MathII Q's

Test Preparation SAT Subject Test Preparation
1

<p>From Blue Book of Subjects, (May 2002 MathII Test)</p>

<p>Explanations would be great. Thx.</p>

<p>The only prime factors of a number n are 2,5,7, and 17. Which of the following could not be a factor of n? Answer is 30.</p>

<p>If sin () = t, then, for all () in the interval 0 < () < pi/2 =
Answer is t / sqroot(1-t^2)</p>

<p>EDIT: Ahh figured out this bottom one, but anyone feel free to explain for others!</p>

2

<p>The prime factors of 30 are 3, 5, and 2. 3 is not one of the prime factors of n, therefore, 30 cannot be n.</p>