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  2. Guess 2/3 of the average - Wikipedia

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

    Guess 2/3 of the average. In game theory, " guess 2 3 of the average " is a game that explores how a player’s strategic reasoning process takes into account the mental process of others in the game. [1] In this game, players simultaneously select a real number between 0 and 100, inclusive. The winner of the game is the player (s) who select a ...

  3. Voting - Wikipedia

    en.wikipedia.org/wiki/Voting

    Voting is a method by which a group, such as a meeting or an electorate, convenes together for the purpose of making a collective decision or expressing an opinion usually following discussions, debates or election campaigns. Democracies elect holders of high office by voting. Residents of a jurisdiction represented by an elected official are ...

  4. Composite number - Wikipedia

    en.wikipedia.org/wiki/Composite_number

    A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than 1 and itself. [1] [2] Every positive integer is composite, prime, or the unit 1, so the composite numbers are exactly the numbers that are not prime and not a ...

  5. Odds and evens (hand game) - Wikipedia

    en.wikipedia.org/wiki/Odds_and_evens_(hand_game)

    Odds and evens is a simple game of chance and hand game, involving two people simultaneously revealing a number of fingers and winning or losing depending on whether they are odd or even, or alternatively involving one person picking up coins or other small objects and hiding them in their closed hand, while another player guesses whether they have an odd or even number.

  6. Triangular number - Wikipedia

    en.wikipedia.org/wiki/Triangular_number

    It represents the number of distinct pairs that can be selected from n + 1 objects, and it is read aloud as "n plus one choose two". The fact that the n {\displaystyle n} th triangular number equals n ( n + 1 ) / 2 {\displaystyle n(n+1)/2} can be illustrated using a visual proof . [1]

  7. Significant figures - Wikipedia

    en.wikipedia.org/wiki/Significant_figures

    The base-10 logarithm of a normalized number (i.e., a × 10 b with 1 ≤ a < 10 and b as an integer), is rounded such that its decimal part (called mantissa) has as many significant figures as the significant figures in the normalized number. log 10 (3.000 × 10 4) = log 10 (10 4) + log 10 (3.000) = 4.000000...

  8. Federalist No. 10 - Wikipedia

    en.wikipedia.org/wiki/Federalist_No._10

    Federalist No. 10. Federalist No. 10 is an essay written by James Madison as the tenth of The Federalist Papers, a series of essays initiated by Alexander Hamilton arguing for the ratification of the United States Constitution. It was first published in The Daily Advertiser (New York) on November 22, 1787, under the name "Publius".

  9. Numeric keypad - Wikipedia

    en.wikipedia.org/wiki/Numeric_keypad

    For use with a shorter keyboard or laptop which omits the numberpad. A numeric keypad, number pad, numpad, or ten key, [1] [2] [3] is the palm-sized, usually-17-key section of a standard computer keyboard, usually on the far right. It provides calculator -style efficiency for entering numbers. The numpad's keys are digits 0 to 9, + ( addition ...