<p>Sorry for the confusion about searching the archives. I did not mean to be evasive. To find the archives, you can click on the bottom of each page: there is an icon that says College Confidential Archive. From there, navigate to the SAT Preparation forum or use the search feature. A good word to use when searching TITLES is "Official" since a lot of posters used that word to preface a compilation of answers. </p>
<p>First, this would be a type of new questions that MIGHT appear. The question's wording is a bit different from what appears in the 10RS. My recommendation is to read the past discussions and mark the questions that threw some students off. </p>
<p>To find the old posts, I would scroll through the archives to find the months in which tests are given. The heaviest discussions are in November and May. At first, it seems very annoying to have to scroll through a bunch of posts but you should consider it a good preparation. At this stage, you should know most of the techniques. Reading the posts will prepare your mind for the type of questions and words that will appear.</p>
<p>Time permitting, I will check the forum in the next days and answer questions to the best of my abilities. </p>
<p>Good luck to all! </p>
<p>Here's the math question: </p>
<p>Which of the answers below lists a pair of numbers that makes FALSE the following assumption:</p>
<p>"The odd number following a prime number is also prime."</p>
<p>A) 91 93
B) 61 63
C) 41 43
D) 21 23
E) 11 13</p>
<p>Answer B)
An explanation: 61 is a prime number, but 63 is not (it's divisible by 3, 7, 9, 21). So 63 is the odd number following a prime number that shows the odd number following a prime number is NOT NECESSARILY prime.</p>
<p>Answers A and D do not make the the assumption false because 91 and 21 are NOT prime. The assumption can only be tested when the first number is the pair IS PRIME. </p>
<p>Answers C and E do not make the assumption false because 41 is prime and so is 43, so it backs up the assumption that the odd number following a prime number is also prime. Same with 11 and 13.</p>