A solution in the R language to Euler Problem 21 which asks to evaluate the sum of all the amicable, or friendly, numbers under 10000. Continue reading → The post Euler Problem 21: Amicable Numbers appeared first on The Devil is in the Data.

Solution in R to Euler Problem 19: How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)? Continue reading → The post Euler Problem 19: Counting Sundays — When does the week start? appeared first on The Devil is in the Data.

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