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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. Peso - Wikipedia

    en.wikipedia.org/wiki/Peso

    In 1686 Spain minted a coin worth 8 reales provinciales (or only $0.80, known as the peso maria or peso sencillo) which was poorly received by the people. [1] An edict made in the same year which valued the peso duro at $1 = 15 and 2/34 reales de vellon proved to be ineffective as the various reales in circulation contained even less silver ...

  4. List of presidents of the Philippines on currency - Wikipedia

    en.wikipedia.org/wiki/List_of_Presidents_of_the...

    5-Piso Bagong Lipunan Coin, 50, 1000 and 5000 Peso Commemorative Coins (1978) 7: 11: Corazon C. Aquino: Commemorative 25-Piso Coin with Ronald Reagan (1986)

  5. System of linear equations - Wikipedia

    en.wikipedia.org/wiki/System_of_linear_equations

    The simplest method for solving a system of linear equations is to repeatedly eliminate variables. This method can be described as follows: In the first equation, solve for one of the variables in terms of the others. Substitute this expression into the remaining equations. This yields a system of equations with one fewer equation and unknown.

  6. Argentine peso - Wikipedia

    en.wikipedia.org/wiki/Argentine_peso

    The peso was a name often used for the silver Spanish eight-real coin. Following independence, Argentina began issuing its own coins, denominated in reales, soles and escudos, including silver eight-real (or sol) coins still known as pesos. These coins, together with those from neighbouring countries, circulated until 1881.

  7. Philippine real - Wikipedia

    en.wikipedia.org/wiki/Philippine_real

    These were called barrillas and first appeared in 1728 in denominations of 1 ⁄ 2 quarto (1 octavo) and 1, 2 and 4 quartos. 20 quartos made up 1 real, hence 160 quartos to a peso. Coins from other Spanish colonies that reached the Philippines were counterstamped. From 1828, the word "MANILA" was stamped on the coins.

  8. Word problem (mathematics education) - Wikipedia

    en.wikipedia.org/wiki/Word_problem_(mathematics...

    Word problem from the Līlāvatī (12th century), with its English translation and solution. In science education, a word problem is a mathematical exercise (such as in a textbook, worksheet, or exam) where significant background information on the problem is presented in ordinary language rather than in mathematical notation.

  9. Balance puzzle - Wikipedia

    en.wikipedia.org/wiki/Balance_puzzle

    a. If the 3 coins balance, then the odd coin is among the remaining population of 2 coins. Test one of the 2 coins against any other coin; if they balance, the odd coin is the last untested coin, if they do not balance, the odd coin is the current test coin. b. If the 3 coins do not balance, then the odd coin is from this population of 3 coins.

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