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  2. List of quiz arcade games - Wikipedia

    en.wikipedia.org/wiki/List_of_quiz_arcade_games

    Quiz Meintantei Neo-Geo: Quiz Daisousa Sen Part 2: 1992: SNK: Quiz Mekurumeku Story: 1994: Sega Enterprises, Ltd. (of Tokyo, Japan) Quiz Nanairo Dreams - Nijiirochou No Kiseki: 1996: Capcom: Quiz Olympic: 1985: Seoul Coin: Quiz Omaeni Pipon Cho! 1996: Data East: Quiz Panicuru Fantasy: 1993: NMK: Quiz Quest: Hime To Yuusha No Monogatari: 1991 ...

  3. Change-making problem - Wikipedia

    en.wikipedia.org/wiki/Change-making_problem

    Coin values can be modeled by a set of n distinct positive integer values (whole numbers), arranged in increasing order as w 1 through w n.The problem is: given an amount W, also a positive integer, to find a set of non-negative (positive or zero) integers {x 1, x 2, ..., x n}, with each x j representing how often the coin with value w j is used, which minimize the total number of coins f(W)

  4. Balance puzzle - Wikipedia

    en.wikipedia.org/wiki/Balance_puzzle

    1.b) The side that was heavier the first time is lighter the second time. This means that one of the three coins that went from the lighter side to the heavier side is the light coin. For the third attempt, weigh two of these coins against each other: if one is lighter, it is the unique coin; if they balance, the third coin is the light one.

  5. Coin problem - Wikipedia

    en.wikipedia.org/wiki/Coin_problem

    Frobenius coin problem with 2-pence and 5-pence coins visualised as graphs: Sloping lines denote graphs of 2x+5y=n where n is the total in pence, and x and y are the non-negative number of 2p and 5p coins, respectively. A point on a line gives a combination of 2p and 5p for its given total (green).

  6. Coin grading - Wikipedia

    en.wikipedia.org/wiki/Coin_grading

    Coin grading [1] is the process of determining the grade or condition of a coin, one of the key factors in determining its collectible value. A coin's grade is generally determined by six criteria: strike, preservation, luster, color, attractiveness, and occasionally the country/state in which it was minted. Several grading systems have been ...

  7. 7 Worst Mistakes First-Time Coin Collectors Need To Avoid

    www.aol.com/finance/7-worst-mistakes-first-time...

    Collecting coins can be fun and even lucrative. But there are seven mistakes you'll want to avoid as a first-time coin collector. See: 5 Best Places To Sell Rare Coins and Paper MoneyFind: $2,000...

  8. Quiz machine - Wikipedia

    en.wikipedia.org/wiki/Quiz_machine

    Quiz machine is a term used in the UK for commercial coin-operated video quiz games that offer cash prizes for winning performances. It is a type of slot machine in which the player must answer questions in addition to, or instead of, matching symbols. [ 1 ]

  9. Certified Acceptance Corporation - Wikipedia

    en.wikipedia.org/wiki/Certified_Acceptance...

    Grading standards have changed over the years. Because collectors and dealers have gotten more selective, an informal "sub-grade" system has evolved. "A" coins are the best of the grade, "B" coins are "solid", and "C" coins are at the low end of a particular grade based on the Sheldon scale, e.g., MS-65. CAC stickers are intended to standardize ...