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)
GMAT Daily Deals
Only Knewton Gmat prep gives you access to >3,400 GMAT practice questions, all...

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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)
GMAT Daily Deals
Only Knewton Gmat prep gives you access to >3,400 GMAT...

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By Miranda Menestrina
- **Jan 21**, 02:00 AM

Math (DS)
Series is such that . How many elements of the series are bigger than ?
1.
2.
Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)
GMAT Daily Deals
Manhattan GMAT:...

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

Math (DS)
If is an integer, is ?
1.
2.
Question Discussion & Explanation
Correct Answer - C - (click and drag your mouse to see the answer)
GMAT Daily Deals
Only Knewton Gmat prep gives you access to >3,400 GMAT...

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By Miranda Menestrina
- **Jan 16**, 02:00 AM

Math (PS)
A contractor estimated that his 10-men crew could complete the construction in 110 days if there was no rain. (Assume the crew does not work on any rainy day and rain is the only factor that can deter the crew from working). However, after...

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By Miranda Menestrina
- **Jan 15**, 02:00 AM

Math (PS)
Two sacks together contained 43.25 kg of sugar. If after 4.75 kg of sugar was taken from the first sack and poured into the second, the weight of the sugar in the first sack became 73% the weight of the sugar in the second...

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