By dzyubam
- **Sep 28**, 02:00 AM

Math (PS)
The following table shows results of a quality inspection of a lot of 15 mirrors.
Defects
Frequency
0
6
1
1
2
4
3
3
4
1
The difference between the median number of defects and the average number of defects in the sample checked is between:
(A) -1 and 0
(B) 0 and 0.5
(C) 0.5 and 1
(D)...

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

Math (DS)
Is ?
1.
2.
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By dzyubam
- **Sep 26**, 02:00 AM

Math (PS)
If is the number of distinct positive divisors of , what is the value of ?
(A) 3
(B) 4
(C) 5
(D) 6
(E) 7
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By dzyubam
- **Sep 23**, 02:00 AM

Math (DS)
If is an integer, what is the value of ?
1.
2.
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By dzyubam
- **Sep 22**, 02:00 AM

Math (PS)
How many of the three-digit numbers are divisible by 7?
(A) 105
(B) 106
(C) 127
(D) 128
(E) 142
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By dzyubam
- **Sep 21**, 02:00 AM

Math (PS)
There are two concentric circles with radii 10 and 8. If the radius of the outer circle is increased by 10% and the radius of the inner circle decreased by 50%, by what percent does the area between the circles grow?
(A) 140%
(B) 141%
(C) 190%
(D)...

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By dzyubam
- **Sep 20**, 02:49 AM

Math (PS)
Is the product of and equal to 1?
1.
2.
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By dzyubam
- **Sep 19**, 02:00 AM

Math (DS)
If and are positive integers, then is an even integer?
1. is an odd integer.
2. is an even integer.
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By dzyubam
- **Sep 16**, 02:00 AM

Math (PS)
If the circus were to sell all of its 220 tickets for this month's performance at its usual price, the revenue from sales would be 10% greater than that collected last month. If the circus raised the ticket price by 5% and sold only...

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By dzyubam
- **Sep 15**, 02:00 AM

Math (PS)
Some part of a 50% solution of acid was replaced with an equal amount of 30% solution of acid. If, as a result, 40% solution of acid was obtained, what part of the original solution was replaced?
(A)
(B)
(C)
(D)
(E)
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