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simple ps problems...can anyone help

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Joined: 09 Feb 2011
Posts: 12

Kudos [?]: 120 [0], given: 1

simple ps problems...can anyone help [#permalink]

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New post 10 Feb 2011, 06:04
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D
E

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On Saturday morning, Malachi will begin a camping vacation and he will return home at
the end of the first day on which it rains. If on the first three days of the vacation the
probability of rain on each day is 0.2, what is the probability that Malachi will return
home at the end of the day on the following Monday?
A. 0.008
B. 0.128
C. 0.488
D. 0.512
E. 0.640


Last year the price per share of Stock X increased by k percent and the earnings per share
of Stock X increased by m percent, where k is greater than m. By what percent did the
ratio of price per share to earnings per share increase, in terms of k and m?
A. k m %
B. (k – m) %
6
C. [100(k – m)] / (100 + k) %
D. [100(k – m)] / (100 + m) %
E. [100(k – m)] / (100 + k + m) %

Which of the following is equal to (212 – 26) / (26 – 23)?
A. 26 + 23
B. 26 - 23
C. 29
D. 23
E. 2
[Reveal] Spoiler: OA

Kudos [?]: 120 [0], given: 1

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Joined: 02 Sep 2009
Posts: 41871

Kudos [?]: 128514 [0], given: 12179

Re: simple ps problems...can anyone help [#permalink]

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New post 10 Feb 2011, 06:20
Welcome to GMAT Club!

Question #1: rain-and-return-probability-100297.html
Question #2: simple-but-couldnt-do-on-test-89307.html
Question #3: easier-way-to-do-this-93194.html

P.S.
Please read and follow: how-to-improve-the-forum-search-function-for-others-99451.html

Writing Mathematical Formulas in the GMAT Club Forums: writing-mathematical-symbols-in-posts-72468.html

Also please post one question per topic.

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Kudos [?]: 128514 [0], given: 12179

Re: simple ps problems...can anyone help   [#permalink] 10 Feb 2011, 06:20
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