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src/projectEuler/question1.js

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+/*
+https://projecteuler.net/problem=1
+If 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 these multiples is 23.
+
+Find the sum of all the multiples of 3 or 5 below 1000.
+*/
+
+var isMultipleOf = (m) => (n) => n % m === 0;
+var is3_ = isMultipleOf(3);
+var is5_ = isMultipleOf(5);
+
+var is3 = (n) => n % 3 === 0;
+var is5 = (n) => n % 5 === 0;
+
+var limit = 1000;
+let result = 0;
+for (let i = 0; i < limit; i++) {
+  if (is3(i) || is5(i)) {
+    result += i;
+  }
+}
+
+console.log(`Answer is ${result}`);