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(defmodule leap
(export (leap-year 1)))
(defun leap-year
([year] (when (=:= (rem year 400) 0))
'true)
([year] (when (=:= (rem year 100) 0))
'false)
([year] (when (=:= (rem year 4) 0))
'true)
([_]
'false))
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Given an age in seconds, calculate how old someone is in terms of a given planet's solar years.
Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
Given a number, find the sum of all the multiples of particular numbers up to but not including that number.
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