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If x, y, and z are positive numbers, is x - y < z?
If x, y, and z are positive numbers, is x - y < z? (1) x + y < z (2) xy < z^2 Nice question
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Which of the following lists a number of points at which a
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Mixture problem
Hello, I am stuck with the below qns. An alloy of manganese, tin and bronze contains 90% bronze, 7% manganese and 3% tin. A second alloy of bronze and tin is melted with first and the mixture contains...
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A cistern has three taps a,b and c,which are equally
A cistern has three taps a,b and c,which are equally efficient . Among the three taps, two taps are used for filling the cistern whereas the third tap is used for emptying the cistern.In how many hours...
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[24+ 5(23)^1/2)]^1/2 + [24- 5(23)^1/2)]^1/2 lies between:
\sqrt{24+5\sqrt{23}} +\sqrt{24-5\sqrt{23}} lies between: (A) 4&5 (B) 5&6 (C) 6&7 (D) 7&8 (E) 8&9 On the face the problem looks very easy but I can't get the answer. Please help!...
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A sphere is inscribed in a cube with an edge of x centimeter
A sphere is inscribed in a cube with an edge of x centimeters. In terms of x what is the shortest possible distance from one of the vertices of the cube to the surface of the sphere? A. x(\sqrt{3}- 1)...
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The longest straight line that can be inscribed in an isosce
The longest straight line that can be inscribed in an isosceles triangle with area 10 and no obtuse angles is A. less than 5 B. greater than or equal to 5, but less than 7.5 C. greater than or equal to...
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If a, b, and c are positive numbers such that a is b percent
If a, b, and c are positive numbers such that a is b percent of c, what is the value of c? (1) a is c percent of b. (2) b is c percent of a. Took me a while. Will post OE later.
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If a and b are positive integers, what is the remainder when
If a and b are positive integers, what is the remainder when ab is divided by 40? (1) b is 60% greater than a. (2) Each of a^2 *b and a*b^2 is divisible by 40. Can post OE if needed.
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Is ABCD rectangular
Is ABCD rectangular? (1) Angle ABC and BCD are right angle (2) Two diagonal have the same length.
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If a and b are nonzero integers, which of the following must
If a and b are nonzero integers, which of the following must be negative? A. (-a)^{-2b} B. (-a)^{-3b} C. -(a^{-2b}) D. -(a^{-3b}) E. None of these
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In a certain sport, teams receive 3 points for each win, 1 p
In a certain sport, teams receive 3 points for each win, 1 point for each draw, and no points for losses. In a five-team tournament in this sport, in which each of teams G, H, J, K, and L played each...
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What is (0.833)(0.143)(0.875)(0.889)(9) in approximate
What is (0.833)(0.143)(0.875)(0.889)(9) in approximate fraction form? In approximate decimal form?Please note that OA and options are NOT available in the source. Please suggest the best approach to...
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Of the 720 students at a certain university, 25 percent are
Of the 720 students at a certain university, 25 percent are seniors. If x seniors were to graduate early and leave the university and no additional students entered or left the university, what value...
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Percentages Increase
Please can anyone help me with my following query. I am very confused Number x has increased by 100% ?? Number x has increased by a factor of 20 ?? Number x has decreased by a factor of 15?? Number x...
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Combinatorics (selection of candidates)
I am making up a question myself. But i dont know how to solve the question mathematically. Can some one help. The question is as below.A company wants to select 2 candidates from one college (Example:...
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Combinatorics (selection of candidates)
I am making up a question myself. But i dont know how to solve the question mathematically. Can some one help. The question is as below.A company wants to select 2 candidates from one college (Example:...
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Cindy has her eye on a sundress but thinks it is too expensi
Cindy has her eye on a sundress but thinks it is too expensive. It goes on sale for 15% less than the original price. Before Cindy can buy the dress, however, the store raises the new price by 25%. If...
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What is the remainder when 333^222 is divided by 7?
What is the remainder when 333^222 is divided by 7?A. 3B. 2C. 5D. 7E. 1
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What is x?
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