Columbia University Science Honors Program ENTRANCE EXAMINATION

<p>no, no, no, you could get 2 and -2 i thought?</p>

<p>a/abs(a) + b/abs(b) + c/abs(c) = abc/abs(abc) </p>

<p>You have 4 cases: all positive, all negative, one positive two negative, two negative one positive (for values of a, b, c)</p>

<p>all positive: 1+1+1+1
all negative: -1 + -1 + -1 + -1
one positive two negative 1+ -1 + -1 + 1
two positive one negative 1 + 1 + -1 + -1</p>

<p>I might be missing something here, but I couldn’t find a way to get 2 or -2 {-4,0,4}</p>

<p>I too got the {-4/0/4} set for that question @masterofpupets.</p>

<p>@thehutis </p>

<p>isnt it not allwaed to divide by 0?</p>

<p>and i feel really stupid for redin that question wrong now:(</p>

<p>thanks for showing me guys</p>

<p>did the question say that it was all integer values for the variables? or just to find the set?</p>

<p>wait so wats the answer? lol</p>

<p>um guys… do u tink 50/50, 45/75, 13/15 is enough to get into the program? :(</p>

<p>lol whoops! i just broke the laws of the universe >.<</p>

<p>so its {-4,0,4}?</p>

<p>damn, i had 16/3 as my answer but i accidently forgot to bubble it in :(</p>

<p>The one with the absolute values was nonzero integers</p>

<p>@thehutis </p>

<p>you might be right maybeyou can divide 0 by 0 but nothing is idk though</p>

<p>and can you still get in if u epic fail the science like me ----- has only taken chem— freshman</p>

<p>@starwing123
great explanation thats exactly how my blue book looked :). i got {-4,0,4} also.</p>

<p>yeah, I haven’t taken Bio yet as a frehsman, so I had to deduce most of the bio ones or leave them blank. although in my opinion, since can’t do anything to change our results, we shouldn’t be worrying. </p>

<p>Just curious, what rooms were you guys in? I was in 702</p>

<p>i was in 310</p>

<p>i was in 301</p>

<p>203 math hall over here</p>

<p>room 417 :P</p>

<p>This test must have been different because the challenge questions we had were different.</p>

<p>well technically 0/0 is a paradox because 0/0 can either equal 1, which is impossible, or 0, which has been disproved by the fact that x/0 is undefined…</p>