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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).
All coins of this series have since been demonetised, with the 100 and 50 rupiah coins being stripped off its legal tender status since 30 November 2006, 25 rupiah coin being made invalid for transactions since 31 August 2010, and 500 rupiah coins (together with 1,000 rupiah coin from 1993 series and 500 rupiah coin from 1997 series, see below ...
A Balinese statuette of a woman made from Chinese cash coins. According to a popular legend Chinese cash coins (Balinese: Pis Bolong) were introduced to Bali around the year 12 AD when the ancient Balinese King Sri Maharaja Aji Jayapangus married the Han dynasty princess Kang Cin Wei and the princess asked the King if Chinese cash coins could become a part of all rituals in Bali, which at the ...
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)
The outer coin makes two rotations rolling once around the inner coin. The path of a single point on the edge of the moving coin is a cardioid.. The coin rotation paradox is the counter-intuitive math problem that, when one coin is rolled around the rim of another coin of equal size, the moving coin completes not one but two full rotations after going all the way around the stationary coin ...
The Rp200 coin was first introduced on November 3, 2003. It weighs 2.38 g (0.084 oz), is 2.3 mm (0.091 in) wide, and has a 25 mm (0.98 in) diameter. Its obverse features the national emblem Garuda Pancasila and the lettering "2003" and "BANK INDONESIA," while its reverse features an image of the Bali mynah ( Leucopsar rothschildi ) as well as ...
The Indonesian twenty five rupiah coin (Rp25) is a now-defunct denomination of the Indonesian rupiah.It was introduced in 1971 and was last revised in 1991. Coins of this denomination were minted until 1996 and have been invalid for transactions since August 31, 2010 when the 1991-issue Rp25 coin ceased to be legal tender.
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