GMAT Problem Solving
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A 30% solution of barium chloride is mixed with 10 grams of water to form a 20% solotion. How many grams of original solution did we start with ?
A) 10
B) 15
C) 20
D) 25
E) 30
Written by Take GMAT Team on March 11th, 2010 with 28 comments.
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Q is a prime number bigger than 10. What is the smallest positive number (except 1) that 3Q can be divided by equally?
a) 3Q.
b) Q
c) 3
d) Q+3
e) 2Q
Written by Take GMAT Team on March 11th, 2010 with 33 comments.
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A store sells newspaper A at price of $1 and B at price of $1.25. In a certain day, if r percent of the total income is from A, and p percent of the total copies sold are A, in terms of r, p=?
Written by Take GMAT Team on March 7th, 2010 with 17 comments.
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If p.q and r are positive integers greater than 1, and p and q are factors of r, which of the following must be the factor of r^pq?
Written by GHCV on March 7th, 2010 with 18 comments.
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On Saturday morning, Malachi will begin a camping vacation and I 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?
Written by GHCV on March 6th, 2010 with 13 comments.
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The sides of a square region, measured to the nearest centimeter, are 6 centimeters long. The least possible value of the actual area of the square region is ?
Written by GHCV on March 5th, 2010 with 15 comments.
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Six cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into the bowl; then a second card is drawn. If the cards are drawn at random and if the sum of the numbers on the cards is 8, what is the probability that [...]
Written by GHCV on March 4th, 2010 with 15 comments.
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Written by Take GMAT Team on February 27th, 2010 with no comments.
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A ladder 25 feet long is leaning against a wall that is perpendicular to level ground. The bottom of the ladder is 7 feet from the base of the wall. If the top of the ladder slips down 4 feet, how many feet will the bottom of the ladder slip?
(A) 4
(B) 5
(C) 8
(D) 9
(E) 15
Written by Take GMAT Team on January 8th, 2010 with 34 comments.
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