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Is r < 1?

This topic has 1 expert reply and 0 member replies

Is r < 1?

Post Tue Oct 31, 2017 9:10 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    $$Is\ r<1?$$

    $$(1)\ r>0$$
    $$(2)\ r^2<1$$

    The OA is B.

    I need help with this DS question. Please, can any expert assist me with it? Thanks.

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    Post Fri Nov 10, 2017 12:38 am
    swerve wrote:
    $$Is\ r<1?$$
    $$(1)\ r>0$$
    $$(2)\ r^2<1$$
    The OA is B.

    I need help with this DS question. Please, can any expert assist me with it? Thanks.
    (1) r > 0.

    If say r = 1/2, the answer is Yes; however, if say r = 2, the answer is No. No unique answer. insufficient.

    (2) r^2 < 1

    => -1 < r < 1

    The answer is Yes. Sufficient.

    The correct answer: B

    Hope this helps!

    -Jay
    _________________
    Manhattan Review GMAT Prep

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    Thanked by: swerve

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