By Miranda Menestrina
- **Feb 20**, 02:00 AM

Math (PS)
How many real roots does this equation have?
(A) 0
(B) 1
(C) 2
(D) 3
(E) 4
Question Discussion & Explanation
Correct Answer - A - (click and drag your mouse to see the answer)
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By Miranda Menestrina
- **Feb 19**, 02:00 AM

Math (PS)
Function is defined as follows:
if is positive or 0 then ;
if is negative then .
Which of the following is true about ?
I.
II.
III.
(A) I only
(B) II only
(C) III only
(D) I and III only
(E) not I, II, or III
Question Discussion...

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By Miranda Menestrina
- **Feb 13**, 02:00 AM

Math (PS)
A smith received an order to make a 1 million liter cube-shaped tank (note that 1 cubic meter = 1,000 liters of water). If he has only 4 meter by 2 meter sheets of metal that can be cut, how many metal sheets will...

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By Miranda Menestrina
- **Feb 12**, 02:00 AM

Math (PS)
If and , which of the following must be true, assuming ?
(A)
(B)
(C)
(D)
(E)
Question Discussion & Explanation
Correct Answer - С - (click and drag your mouse to see the answer)
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By Miranda Menestrina
- **Feb 7**, 02:00 AM

Math (PS)
If a portion of a half water/half alcohol mix is replaced with 25% alcohol solution, resulting in a 30% alcohol solution, what percentage of the original alcohol was replaced?
(A) 3%
(B) 20%
(C) 66%
(D) 75%
(E) 80%
Question Discussion & Explanation
Correct Answer - E - (click and drag...

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By Miranda Menestrina
- **Feb 6**, 02:00 AM

Math (PS)
In preparation for the Olympics, a group of five women is participating in a 400 meter race. What is the probability that either Jenny or Sally will win this race?
(A)
(B)
(C)
(D)
(E)
Question Discussion & Explanation
Correct Answer - C - (click and...

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By Miranda Menestrina
- **Feb 3**, 02:00 AM

Math (DS)
Do lines and cross?
1.
2.
Question Discussion & Explanation
Correct Answer - E - (click and drag your mouse to see the answer)
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By Miranda Menestrina
- **Jan 31**, 02:00 AM

Math (PS)
For any numbers and , . If , which of the following cannot be the value of ?
(A) -2
(B) -1
(C) 0
(D) 1
(E) 2
Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)
GMAT...

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By Miranda Menestrina
- **Jan 28**, 02:00 AM

Math (PS)
The sum of first consecutive odd integers is . What is the sum of all odd integers between 13 and 39 inclusive?
(A) 351
(B) 364
(C) 410
(D) 424
(E) 450
Question Discussion & Explanation
Correct Answer - B - (click and drag your mouse to see the...

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By Miranda Menestrina
- **Jan 27**, 02:00 AM

Math (PS)
. What is in terms of ?
(A)
(B)
(C)
(D)
(E) none of the above
Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)
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