Am i wrong..?

Test Preparation SAT Preparation
1

<p>so lately i've been getting a lot of the math questions on the second BB edition wrong and i don't know why..for example</p>

<pre><code> a, 3a, ...
</code></pre>

<p>1) The frist term in the sequence above is a, and each term after the first is 3 times the preceeding term. If the sum of the first 5 terms is 605 what is the value of a?</p>

<p>the answer i got was 5. but the answer given is 6. how is this possible? i did this problem 10 times, and don't catch where i'm going wrong!</p>

2

<p>I got the same answer 5 by doing 1a+3a+9a+27a+81a=121a
605/121=5</p>

3

<p>Yeah, I got the same answer as you… it’s just a (bad) CB misprint.</p>

4

<p>I got 5 also</p>

5

<p>The second edition is said to have a significant # of misprints.</p>