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  2. 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).

  3. Balance puzzle - Wikipedia

    en.wikipedia.org/wiki/Balance_puzzle

    If coins 0 and 13 are deleted from these weighings they give one generic solution to the 12-coin problem. If two coins are counterfeit, this procedure, in general, does not pick either of these, but rather some authentic coin. For instance, if both coins 1 and 2 are counterfeit, either coin 4 or 5 is wrongly picked.

  4. 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)

  5. Greedy algorithm - Wikipedia

    en.wikipedia.org/wiki/Greedy_algorithm

    Greedy algorithms determine the minimum number of coins to give while making change. These are the steps most people would take to emulate a greedy algorithm to represent 36 cents using only coins with values {1, 5, 10, 20}. The coin of the highest value, less than the remaining change owed, is the local optimum.

  6. Talk:Balance puzzle - Wikipedia

    en.wikipedia.org/wiki/Talk:Balance_puzzle

    4 14 coins in 3 weights. 5 "Definitive solution to the counterfeit coin problem" listed at Redirects for discussion. 1 comment.

  7. Here's How Crypto Investors Are Thinking About Solana and ...

    www.aol.com/finance/heres-crypto-investors...

    On Jan. 19, the coin reached its highest price ever at nearly $296, which corresponds to a total market cap of $140 billion. Here's How Crypto Investors Are Thinking About Solana and Ethereum ...

  8. Eureka effect - Wikipedia

    en.wikipedia.org/wiki/Eureka_effect

    In this problem a set of 8 coins is arranged on a table in a certain configuration, and the subject is told to move 2 coins so that all coins touch exactly three others. The difficulty in this problem comes from thinking of the problem in a purely 2-dimensional way, when a 3-dimensional approach is the only way to solve the problem. [33]

  9. 'Pawn Stars:' Why a rare coin worth six figures sold for much ...

    www.aol.com/entertainment/2014-12-12-pawn-stars...

    On History Channel's hit show "Pawn Stars," a man came in to sell a 1907 Saint-Gaudens double eagle $20 gold coin. The coins are extremely rare, and some of them have sold for more than $1 million ...