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Set A consists of the numbers {x, y, -x}. If each term of

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Set A consists of the numbers {x, y, -x}. If each term of [#permalink] New post 21 Feb 2004, 10:10
Set A consists of the numbers {x, y, -x}. If each term of set A is squared and the median of the squared set is 1 more than its original median, which of the following can be the values of x and y.
a. x =1, y =-1
b. x=-1, y=0
c. x=-1, y =1
d. x=0, y=1
e. x=1, y=3
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 [#permalink] New post 21 Feb 2004, 15:09
Is there any way other than back sloving?

Last edited by kpadma on 21 Feb 2004, 15:19, edited 1 time in total.
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 [#permalink] New post 21 Feb 2004, 15:13
This is an excellent question.
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 [#permalink] New post 22 Feb 2004, 08:35
yes B is correct.
If x=-1 and y=0, the initial median of {x, y, -x} would be y or 0. The median of the squares of the numbers would be 1 since x^2 = -x^2
  [#permalink] 22 Feb 2004, 08:35
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Set A consists of the numbers {x, y, -x}. If each term of

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