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3 quant questns gmatprep

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Current Student
Joined: 07 Aug 2009
Posts: 49
Followers: 0

Kudos [?]: 6 [0], given: 1

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09 Oct 2011, 14:46
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
Current Student
Joined: 07 Aug 2009
Posts: 49
Followers: 0

Kudos [?]: 6 [0], given: 1

Re: 3 quant questns gmatprep [#permalink]

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09 Oct 2011, 14:54
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 ?
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2013
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Kudos [?]: 1822 [0], given: 376

Re: 3 quant questns gmatprep [#permalink]

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10 Oct 2011, 00:03
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

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c

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Re: 3 quant questns gmatprep   [#permalink] 10 Oct 2011, 00:03
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