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gmat prep

This topic has 1 member reply
yvonne12 Master | Next Rank: 500 Posts Default Avatar
Joined
07 Feb 2007
Posted:
144 messages

gmat prep

Post Wed Mar 07, 2007 3:26 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    if n= 1/3 +1/3^2+1/3^3 then N is between

    0 and 1/9
    1/9 and 1/3
    1/3 and 8/9
    8/9 and 4/3
    4/3 and 2

    pls explain

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    ssiva Junior | Next Rank: 30 Posts Default Avatar
    Joined
    13 Feb 2007
    Posted:
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    1 times
    Post Wed Mar 07, 2007 4:08 pm
    1/3 + (1/3)(1/3) + (1/3)(1/3)(1/3) = 0.333 + 0.333/3 + 0.3333/9
    = 0.333 + 0.111 + 0.03 = 0.474

    It is between 1/3 and 8/9

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