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3 quant questns gmatprep

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Joined: 07 Aug 2009
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3 quant questns gmatprep [#permalink] New post 09 Oct 2011, 13:46
hello all,

please check out these 3 questions. wld appreciate some explantion.
thnx


Q1. If x^4 + y^4 = 100, then the greatest possible value of x is between

a) 0 and 3
b) 3 and 6
c) 6 and 9
d) 9 and 12
e) 12 and 15

ans: b



Q2. In the xy-plance, does the line with equation y = 3x + 2 contain the point (r,s)

1) (3r + 2 - s)(4r + 9 - s) = 0
2) (4r - 6 - s)(3r + 2 - s) = 0

ans: c



Q3.A certain office supply store stocks 2 sizes of self-stick notepads, each in 4 colors: blue, green, yellow, or pink. The store packs the notepads in packages that contain either 3 notepads of the same size and the same color or 3 notepads of the same size and of 3 different colors. If the order in which the colors are packed is not considered, how many different packages of the types described above are possible ?

a) 6
b) 8
c) 16
d) 24
e) 32

ans: c
Intern
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Re: 3 quant questns gmatprep [#permalink] New post 09 Oct 2011, 13:54
i think i figured out the first question.

the prompt doesnt specify x and y to be integers... so answer shld be a decimal. 3 point something ... is my reasoning right ?
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Re: 3 quant questns gmatprep [#permalink] New post 09 Oct 2011, 23:03
coldteleporter wrote:
hello all,

please check out these 3 questions. wld appreciate some explantion.
thnx


Q1. If x^4 + y^4 = 100, then the greatest possible value of x is between

a) 0 and 3
b) 3 and 6
c) 6 and 9
d) 9 and 12
e) 12 and 15

ans: b



Q2. In the xy-plance, does the line with equation y = 3x + 2 contain the point (r,s)

1) (3r + 2 - s)(4r + 9 - s) = 0
2) (4r - 6 - s)(3r + 2 - s) = 0

ans: c



Q3.A certain office supply store stocks 2 sizes of self-stick notepads, each in 4 colors: blue, green, yellow, or pink. The store packs the notepads in packages that contain either 3 notepads of the same size and the same color or 3 notepads of the same size and of 3 different colors. If the order in which the colors are packed is not considered, how many different packages of the types described above are possible ?

a) 6
b) 8
c) 16
d) 24
e) 32

ans: c


1. Please use the correct forum for publishing the questions. These questions belong to PS/DS forum.
2. Post one and just one question per thread.
3. Search before you post. Most of the GMATPrep, OG, MGMAT questions are already discussed.
common-posting-ethics-119627.html
4. Don't reveal OA's in the question. Hide it with spoiler.
[Reveal] Spoiler: Answer
c


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Re: 3 quant questns gmatprep   [#permalink] 09 Oct 2011, 23:03
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