By dzyubam
- **Jul 7**, 02:00 AM

Math (PS)
At Daifu university, 40% of all students are both members of a student organization and want to reduce their tuition costs. 20% of those students who want to reduce tuition are not members of the student organization. What percentage of all Daifu students want...

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By dzyubam
- **Jul 6**, 02:00 AM

Math (DS)
and are prime integers. What is ?
1. is a prime integer
2.
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By dzyubam
- **Jul 5**, 02:00 AM

Math (DS)
The bowl contains chips of red and green color and no chips of any other color. If two chips are drawn from the basket at random without replacement, what is the probability that both chips will be green?
1. 20% of all chips in the...

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By dzyubam
- **Jul 4**, 02:00 AM

Math (PS)
If function satisfies for all , which of the following must be true?
(A)
(B)
(C)
(D)
(E)
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By dzyubam
- **Jul 1**, 02:00 AM

Math (PS)
How many odd three-digit integers greater than 800 are there such that all their digits are different?
(A) 40
(B) 56
(C) 72
(D) 81
(E) 104
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By dzyubam
- **Jun 30**, 02:00 AM

Math (PS)
If equation encloses a certain region on the coordinate plane, what is the area of this region?
(A) 20
(B) 50
(C) 100
(D) 200
(E) 400
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By dzyubam
- **Jun 29**, 02:00 AM

Math (PS)
Jack can complete the task in 8 hours. Tom can complete the task in 12 hours. If Jack works on the task alone for 4 hours and then Tom starts to help him, how many hours in total will Jack have worked by the...

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By VeritasPrep
- **Jun 28**, 09:09 AM

Admit it: You had at least a class or two in school for which you thrived on partial credit – you wouldn’t get many answers correct, but with participation points and partial credit for doing most of the steps correctly you could...

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By dzyubam
- **Jun 28**, 03:45 AM

Math (DS)
grams of water were added to the 80 grams of a strong solution of acid. As a result, the concentration of acid in the solution became times of the initial concentration. What was the concentration of acid in the original solution?
...

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By dzyubam
- **Jun 27**, 02:00 AM

Math (DS)
A rectangle is inscribed in a circle of radius 5. Is the area of the rectangle bigger than 48 ?
1. The ratio of the lengths of sides of the rectangle is 3:4
2. The difference between the lengths of sides of the rectangle is smaller...

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