<p>The one on page 408 of CB book, question no. 5</p>
<p>Sorry, I couldn't post the question because it goes with a circle figure</p>
<p>Right away you know there are 36 possible fractions (6x6). If you didn't, you could easily reason that from the answer choices</p>
<p>Recall that probability is #favorable possibilites/#total possibilities, so it will be something /36</p>
<p>Now, systematically find all the ones greater than 1, remembering what that entails. You will see a pattern emerge:</p>
<p>if a = 1, no fraction will be greater than 1
a = 2, 1 fraction will be greater than 1 (2/1)
a = 3 2 fractions will be greater than 1 (3/1, 3/2)</p>
<p>No need to count the others. You've found the pattern. There are n-1 fractions greater than 1 for n 1-6. So there are
5 + 4 + 3 + 2 + 1 = 15 fractions greater than 1</p>
<p>The answer is A, 15/36.</p>
<p>Thank You very much</p>