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Fri Aug 17, 2007 21:11 pm Tough GRE Math Questions |
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| Please answer the questions. I am in need of help very much. |
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yoazzole New Member
Joined: 17 Aug 2007 Posts: 2
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Tue Aug 21, 2007 0:27 am Tough GRE Math Questions |
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#1, A= 32/44 times 12/43, compare then. (sorry i am too lazy to do the calculation) reason:there 32 short at the beginning chosen from totally 44pens, then choose a long one from the remaining 43 (44-1). is this clear?
#2, i agree with you, as a mathematics student, the answer to this question is : no anwser in real number,(but ok is complex number). anyway, i would choose "not determined" for this one. yeah, i hate the gre quan test, because i have seen a lot of them are stupid with mathematical mistake or unprecise statement.
#3, sorry, i really don't understand the question "if at least one topping has to be used" to be use for what? "each topping cannot be used more than once" more than once in what? in each sanwich? and for the toppings, do you consider the up or down side? in my view, up and down is the same thing. this is a good example for what i said, "GRE quan test is stupid and not precise" if i have to choose, i would say B is greater.
again, i wish you have good luck that without seeing the unprecise question. even as a math major, i am not confident to get a perfect score, if these type of unprecise questions show up. |
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kevinlee001 New Member
Joined: 21 Aug 2007 Posts: 5 Location: chicago
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Sat Aug 25, 2007 21:23 pm Tough GRE Math Questions |
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1. 32/44 * 12/43 = 8/11 * 12/43 = 96/473 = 20% (approx) 2. Indeterminate. The problem is not solved in real space. 3. 15 is correct: Let's say the four toppings are a, b, c and d. a: You can make two classes of sandwiches- with and without 'a' b: 2- with or without 'b' c: 2 d: 2
There are 16 combinations (2*2*2*2). Since a sandwich must contain at least one topping (else it is just bread slices), the combination with none of the toppings should not be considered. So 15 sandwiches. |
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WarriorOfDiscord New Member

Joined: 25 Aug 2007 Posts: 1 Location: India
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Immortal I'm new here and I like it ;-)
Joined: 17 Sep 2007 Posts: 14
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Wed Sep 19, 2007 19:30 pm Tough GRE Math Questions |
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2x + 4y = 16 3x + 6y = 30
multiplying equations by 2 and 3 respectively we get
6x+12y=48 6x+12y=60 ----------------
well the equation given here is wrong you cannot have same values of x and y giving different answers on right hand side. |
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neeshu I'm new here and I like it ;-)

Joined: 19 Sep 2006 Posts: 28
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Tue Oct 09, 2007 3:18 am Tough GRE Math Questions |
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hello friends, i am bhanupratap,studied m.res in life sciences at glasgow university,.recently started gre preparation,.any one could suggest me some good material for quants. i appreciate you all,all the best thanks _________________ bhanupratap |
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bhanupratap New Member
Joined: 09 Oct 2007 Posts: 7 Location: glasgow
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