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Numeric Entry Practice Question of the Week #21

This week’s practice question is Numeric Entry, so no answer choices are given! You’ll have to type the number in to submit your answer. Good luck, we’ll be posting the answer and explanation tomorrow!

If , what is the value of n?

 

Update: Here’s the answer/explanation post!

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8 Responses to Numeric Entry Practice Question of the Week #21

  1. SIndhuja May 25, 2014 at 7:16 pm #

    Difficulty level of question?

  2. MENG November 12, 2011 at 11:02 am #

    the Ans—->=1/(3*2^n)*(1/(2*3*n)=1/36—->=(2*3*(2^n*3^n)=36——>
    (6*2^n*3^n)=36

    =(2*3)^n=6—->n=1

  3. Priya November 11, 2011 at 7:16 am #

    Ans: n = 1

  4. Sathish Kumar October 18, 2011 at 12:21 am #

    n=1

  5. Zaur October 17, 2011 at 10:22 pm #

    1/3 * 1/2 * 1/(2^n) * 1/(3^n)=1/(2^2 * 3^2) 1/(2*3)^n = 1/(2*3) is equivalent to 1/a^x = 1/a OR a^-x = a^-1, where a=2*3

    -x=-1 and x=1

    enter 1 as answer for this question 🙂

  6. Aashish October 17, 2011 at 8:47 pm #

    Ans is 1….

  7. MN October 17, 2011 at 4:16 pm #

    Answer is 1.
    .
    Concepts: x ^ -1 = 1/x [or, x^-n = 1/(x^n)]
    & 1/ (x * y) = 1/x * 1/y [rudimentary, both of these]
    .
    Given expression,
    .
    (2^-n /3) * (3^-n /2) = 1/36
    using the 2 concepts this becomes,
    1/3 * 1/2 * 1/(2^n) * 1/(3^n) = 1/36
    Multiplying both sides by 6,
    1/(2^n * 3^n) = 1/6
    .
    This simplifies to 2^n * 3^n = 6.
    .
    We can substitute 1 as the value of n in the equation to verify.
    .
    MN

  8. Marzu October 17, 2011 at 2:06 pm #

    The value of N is 3.

    I hope i’m right… haha


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