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  2. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    Now consider the numerators. The first fraction, two thirds, is twice as large as one third. Since one third of a quarter is one twelfth, two thirds of a quarter is two twelfth. The second fraction, three quarters, is three times as large as one quarter, so two thirds of three quarters is three times as large as two thirds of one quarter.

  3. Interquartile range - Wikipedia

    en.wikipedia.org/wiki/Interquartile_range

    For a symmetric distribution (where the median equals the midhinge, the average of the first and third quartiles), half the IQR equals the median absolute deviation (MAD). The median is the corresponding measure of central tendency. The IQR can be used to identify outliers (see below). The IQR also may indicate the skewness of the dataset. [1]

  4. Guess 2/3 of the average - Wikipedia

    en.wikipedia.org/wiki/Guess_2/3_of_the_average

    Grosskopf and Nagel's investigation also revealed that most players do not choose 0 the first time they play this game. Instead, they realise that 0 is the Nash Equilibrium after some repetitions. [14] A study by Nagel reported an average initial choice of around 36. This corresponds to approximately two levels of k-level reasoning. [15]

  5. Multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Multiplication_algorithm

    Done recursively, this has a time complexity of (⁡). Splitting numbers into more than two parts results in Toom-Cook multiplication; for example, using three parts results in the Toom-3 algorithm. Using many parts can set the exponent arbitrarily close to 1, but the constant factor also grows, making it impractical.

  6. Wheat and chessboard problem - Wikipedia

    en.wikipedia.org/wiki/Wheat_and_chessboard_problem

    If a chessboard were to have wheat placed upon each square such that one grain were placed on the first square, two on the second, four on the third, and so on (doubling the number of grains on each subsequent square), how many grains of wheat would be on the chessboard at the finish? The problem may be solved using simple addition.

  7. Pentation - Wikipedia

    en.wikipedia.org/wiki/Pentation

    It is a binary operation defined with two numbers a and b, where a is tetrated to itself b − 1 times. The type of hyperoperation is typically denoted by a number in brackets, []. For instance, using hyperoperation notation for pentation and tetration, 2 [ 5 ] 3 {\displaystyle 2[5]3} means tetrating 2 to itself 2 times, or 2 [ 4 ] ( 2 [ 4 ] 2 ...

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  9. Template:Two-thirds - Wikipedia

    en.wikipedia.org/wiki/Template:Two-thirds

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