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Question Test OG, maybe easy but...still

This topic has 1 expert reply and 4 member replies
isisalaska Community Manager Default Avatar
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Question Test OG, maybe easy but...still

Post Sun Jan 07, 2007 4:33 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    5^11 x 4^11= 2x10^n what is "n"?
    Please show me "all the steps" thank you

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    Isis Alaska

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    rajs.kumar Senior | Next Rank: 100 Posts Default Avatar
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    Post Mon Jan 08, 2007 8:12 am
    is the right hand side of the equality (2 x 10) ^ n or 2 x 10 ^ n?

    isisalaska Community Manager Default Avatar
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    Post Mon Jan 08, 2007 9:00 am
    10 X (multiplied)

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    Isis Alaska

    axefx Newbie | Next Rank: 10 Posts Default Avatar
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    Post Thu Jan 25, 2007 12:10 pm
    isisalaska wrote:
    10 X (multiplied)
    If the question is:
    (5^11) * (4 ^ 11) = (2 * 10)^n
    Then the answer is n=11...

    (5^11) * (4 ^ 11) = (2 * 10)^n
    = (5 * 4) ^ 11 = (2 * 10)^n
    = (20)^11 = (20)^n
    i.e. n = 11

    If the question is:
    (5^11) * (4 ^ 11) = 2 * (10^n)
    Then I don't know how to solve this question and will appreciate the answer

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    Stacey Koprince GMAT Instructor
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    Post Fri Jan 26, 2007 11:49 pm
    Hi, Isis - please be sure to use parentheses to make your problem clear. Thanks!

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    kandelaki Senior | Next Rank: 100 Posts Default Avatar
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    Post Tue Feb 27, 2007 11:38 pm
    i wonder can you do this 5^11*4^11=20^11 ??

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