<p>@Praying4Luck;
Put 18√18 on the calculator. Press equal. It’ll give 54√2 as the answer. Multiply them. There’s your answer.</p>
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<p>Is the answer 81?</p>
<p>I think it might be 64</p>
<p>
There are five spots:</p>
<p><em>4</em> <em>3</em> <em>1</em> <em>2</em> <em>3</em></p>
<p>4 possibilities for the left end spot since C is excluded
3 possibilities for the right end spot since C is excluded and one card was placed at the left end.
3 possibilities for the spot that is second to left since C is included but two cards were placed on either end.
…</p>
<p>You multiply the possibilities for each spot.</p>
<p>The answer is not 81. It’s also not 64!</p>
<p>is it 68?..</p>
<p>Edit: 43 ?;)</p>
<p>And yeah I edited this a hundred times but I am so bad at envisioning this type of problem :|</p>
<p>Haha… It’s actually 40…</p>
<p>Here’s IceQube’s explanation since I don’t feel like writing an explanation…
</p>
<p>Great question, JeffreyJung!</p>
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<p>Thanks, but this question is actually from pckeller. It’s from another thread, but I thought this problem was very nice… :)</p>
<p>It’ll definitely come in handy on one of the trials! Counting problems are never predictable. The only way around them, is to understand the underlying logic, to be able to apply it, in the future, regardless of the type of counting problem.</p>
<p>I’m sorry I keep looking back at the counting question in the Blue Book and I just don’t understand why. </p>
<p>A B C D E</p>
<p>A can be filled by any card except C, so there are 4 possibilities. [√]
E can be filled by any card except A or C, so there are 3 possibilities. [√]
B can be filled by B, C or D, so there are 3 possibilities. [√]
C can be filled by C or D, so there are 2 possibilities. [√]
D can be filled by D, so there is only 1 possibility. [√]</p>
<p>(4)(3)(3)(2)(1) = 72</p>
<p>Thanks ! Now I’m going to try and ace the second one you gave me…</p>
<p>Do the restricted ones first.
The right end one has 3 possibilities.</p>
<p>For the counting problem with Jack, Maria, etc.</p>
<p>The answer is 96, correct?</p>
<p>You are correct! Haha. Counting problems aren’t really difficult when you know how they should be approached.</p>
<p>Thanks for the help. I’m shooting for a 700+ Math, but it is really frustrating when I go back after I check my work and see that I got something wrong because I’m not in the right mindset when I approach the problem. My best math score in 5 practice tests is 710, and my worst is 600 I think. I don’t feel like there is a trend at all :p</p>
<p>Are you saying that you make careless mistakes?
If so, I don’t know what to tell you. I guess you just have to really understand CB “math”. You just have to be on top of their clever ruses. Be able to identify the trick answers…</p>
<p>Page 590, #22: C is the answer listed, but A seems viable as well. Different sides of a single issue correlates to the different views of bats at different times of bats.</p>
<p>Also, #20 is a strangely worded question and I didn’t know what it was asking to be honest.</p>
<p>I’ll look at those when I get home! I’m outside right now… :)</p>
<p>Can you tell me which edition you have?
1st edition pg 590? or 2nd edition?</p>
<p>I’m assuming it’s the 2nd edition pg 590 since you mentioned bats.</p>
<p>For #20, the question is asking which answer choice does not weaken the author’s argument presented in the second paragraph.</p>
<p>The second paragraph discusses that humans are afraid of night because they are active during the day, and they deem night dwellers as people up to no good.</p>
<p>A) The assertion that many people work at night and sleep during the day contradicts author’s statement that it is in our human nature to be active during the day but sleep at night.
B) Owls are nocturnal, but they do not arouse human fear. Therefore, this statement would detract from the author’s argument that things that live by night live outside the realm of “normal” time and are inherently bad.
C) Since the author stated that we are accustomed to mastering our world by day, the assertion that most dangerous predators hunt during the day would directly demean the author’s argument.
D) If some cultures were to associate bats with positive qualities, that would directly undermine the author’s argument that we as humans associate night dwellers with people up to no good.
E) Nearly irrelevant.</p>