<p>a-b=0, that one was 2a+b=10</p>
<p>the n(n+1)/2 was real, wasn’t it n+2(n+3)/2</p>
<p>I’m hoping for an 800, and I haven’t seen any wrong answers on here, so maybe…</p>
<p>It was a-b = 0, yes.</p>
<p>@fallenangel9</p>
<p>that’s what happened to me, I can’t tell which section was the experimental</p>
<p>@TASser Yep</p>
<p>It was 2a + 3b = 10 and a = b = 2 so a - b = 0.
[(n+2)(n+3)]/2 was correct you just had to replace each n with (n + 1)</p>
<p>what about the question that was like abcdefg or 1234567 how many combinations of three without repeating are there.</p>
<p>^That was experimental, don’t worry about it.</p>
<p>was that section 5 or 6 for you?</p>
<p>There was like phone numbers, seven digits long, all unique numbers
How many times can you switch ONLY two of them differently… I put 6.</p>
<p>that was the telephone one the answer was six
1234567
u can switch up the 1 and 2, 2 and 3, 3 and 4, 4 and 5, 5 and 6, and 6 and 7 making 6 possible mistakes total</p>
<p>In the shortest math section, what was the answer to a question about a parabola with vertex (c,d) - I think - and point tangent to it</p>
<p>Guys…I don’t remember any of these questions, and it’s freaking me out. lol</p>
<p>Anyone have an estimate for 2 wrong and 1 omitted?</p>
<p>@ Tasser I don’t think it was</p>
<p>Can someone verify that the mode/median one is I and II
i remember it asked for the mean?
not sure.</p>
<p>The parabola answer was 8. I plugged it into my calculator and meticulously scrutinized the table.</p>
<p>^^That’s what I got; I’m pretty sure it’s correct.</p>
<p>Was the one about combinations of party favors in the experimental section. If not, what was the answer?</p>
<p>@lalalalisa</p>
<p>That’s what I got, III didn’t work b/c the mean could be 3.4 something, which is less than 4</p>
<p>@lala for the 20 ppl 5 question test? Yeah it was I and II</p>
<p>There was no 1234567 question on my SAT.</p>
<p>That said, there was a 7 digit phone number question that had an answer of 6.</p>