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List L consists of the 7 numbers u,2u,3u,4u,5u,6u, and [#permalink]
21 Dec 2017, 08:49
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List L consists of the 7 numbers u,2u,3u,4u,5u,6u, and 7u, where u≠0.
Quantity A 
Quantity B 
The median of the 7 numbers in list L 
u 
A. Quantity A is greater B. Quantity B is greater. C. The two quantities are equal D. The relationship cannot be determined from the information given. kudo for the right solution and explanation




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Re: List L consists of the 7 numbers u,2u,3u,4u,5u,6u, and [#permalink]
08 Jan 2018, 19:33
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Median of u,2u,3u,4u,5u,6u, and 7u is 4u
We can test any numbers if u=1/2 A is bigger, if u=2 B is bigger



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Re: List L consists of the 7 numbers u,2u,3u,4u,5u,6u, and [#permalink]
20 Nov 2018, 07:55
The answer must be D, it is true that the median is 4u so if we put u equall to 8 the result will be a positive number which is greater than A, and if we put u equal to a positive number then B is greater than A!!



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Re: List L consists of the 7 numbers u,2u,3u,4u,5u,6u, and [#permalink]
20 Nov 2018, 08:23
Carcass wrote: List L consists of the 7 numbers u,2u,3u,4u,5u,6u, and 7u, where u≠0.
Quantity A 
Quantity B 
The median of the 7 numbers in list L 
u 
A. Quantity A is greater B. Quantity B is greater. C. The two quantities are equal D. The relationship cannot be determined from the information given. kudo for the right solution and explanationA = median of u,2u,3u,4u,5u,6u, and 7u = 4u B = u so we have to compare u and 4u... If u is NEGATIVE. 4u>u If u is POSITIVE, u>4u Therefore, the relation cannot be ascertained. D
_________________
Some useful Theory. 1. Arithmetic and Geometric progressions : https://greprepclub.com/forum/progressionsarithmeticgeometricandharmonic11574.html#p27048 2. Effect of Arithmetic Operations on fraction : https://greprepclub.com/forum/effectsofarithmeticoperationsonfractions11573.html?sid=d570445335a783891cd4d48a17db9825 3. Remainders : https://greprepclub.com/forum/remainderswhatyoushouldknow11524.html 4. Number properties : https://greprepclub.com/forum/numberpropertyallyourequire11518.html 5. Absolute Modulus and Inequalities : https://greprepclub.com/forum/absolutemodulusabetterunderstanding11281.html




Re: List L consists of the 7 numbers u,2u,3u,4u,5u,6u, and
[#permalink]
20 Nov 2018, 08:23





