Euler-Project(IV)
31. Coin sumsProblem DescriptionIn the United Kingdom the currency is made up of pound (£) and pence (p). There are eight coins in general circulation
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Euler-Project(III)
21. Amicable numbersProblem DescriptionLet d(n) be defined as the sum of proper divisors of n (numbers less than n which divide evenly into n).If d(a)
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Euler-Project(II)
11. Largest product in a gridProblem DescriptionIn the 20×20 grid below, four numbers along a diagonal line have been marked in bold.
08 02 22 97 38 1
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Euler-Project(I)
1. Multiples of 3 and 5Problem DescriptionIf we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of t
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