By dzyubam
- **Mar 16**, 02:00 AM

Math (PS)
If is a positive integer, is defined as the number of positive integers which are less than and do not have common factor with other than 1. If is prime then
(A)
(B)
(C)
(D)
(E) 2
Question Discussion &...

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By dzyubam
- **Mar 15**, 04:57 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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By dzyubam
- **Mar 13**, 02:00 AM

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By dzyubam
- **Mar 12**, 02:00 AM

Math (DS)
What is the mean of four consecutive even integers , , , ? is the smallest of the four integers.
1.
2.
Question Discussion & Explanation
Correct Answer - B - (click and drag your mouse to see the answer)
GMAT Daily...

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

Math (PS)
During the break of a football match the coach will make 3 substitutions. If the team consists of 11 players among which there are 2 forwards, what is the probability that none of the forwards will be substituted?
(A)
(B)
(C)
(D)
(E)
Question Discussion...

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By dzyubam
- **Mar 5**, 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 dzyubam
- **Mar 2**, 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 dzyubam
- **Feb 27**, 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 dzyubam
- **Feb 24**, 02:00 AM

Math (PS)
If and , which of the following must be true, assuming
(C)
(D)
(E)
Question Discussion & Explanation
Correct Answer - С - (click and drag your mouse to see the answer)
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By dzyubam
- **Feb 21**, 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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