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digits rounding off

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Neo Anderson Rising GMAT Star Default Avatar
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digits rounding off Post Sat Apr 28, 2012 8:51 pm
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  • Lap #[LAPCOUNT] ([LAPTIME])
    Is x=1?
    (1) If x were rounded to the nearest thousandth, the result would be 1
    (2) If x were rounded to the nearest tenth, the result would be equal to the exact value of x

    have ruled out A, B and D, stuck between C and E!

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    ronnie1985 GMAT Destroyer!
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    Post Sat Apr 28, 2012 10:55 pm
    S1 is not sufficient as 1.0004 when rounded off to nearest 1000th gives 1.000
    S2 is sufficient as 0.9 to 1.4 when rounded to nearest tenth gives 1 and it is given that if the number is rounded to its nearest tenth it gives the number itself. In this case it is 1.0.

    (B) is the answer. What's OA?

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    vikram4689 GMAT Titan
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    Post Sun Apr 29, 2012 2:20 am
    a) x = 1.000[0-4] ...Insufficient

    b) x = 1.[0-4]000 ...Insufficient

    combining a & b
    x = 1.0000

    Hence, C

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