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Number properties

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RSK Just gettin' started!
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Number properties Post Mon Feb 20, 2012 9:34 am
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  • Lap #[LAPCOUNT] ([LAPTIME])
    Hi guys,

    Another confusing number properties question. Please help me solve this.

    The numbers x and y are not integers. The value of x is closest to which integer?

    1) 4 is the integer that is closest to x+y.
    2) 1 is the integer that is closest to x-y.

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    Post Mon Feb 20, 2012 9:27 pm
    The are both insufficient by themselves as x and y could be any numbers...

    You can set up inequalities with the information in each statement

    1) 3.5 < x + y < 4.5
    2) 0.5 < x - y < 1.5

    You can add inequalities like this to get:

    4 < 2x < 6 or 2 < x < 3

    You can't tell if x is closer to 2 or 3. Answer = E

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