74 lines
1.3 KiB
Markdown
74 lines
1.3 KiB
Markdown
---
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id: 5900f36e1000cf542c50fe80
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title: 'Problem 1: Multiples of 3 and 5'
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challengeType: 5
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forumTopicId: 301722
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dashedName: problem-1-multiples-of-3-and-5
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---
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# --description--
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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.
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Find the sum of all the multiples of 3 or 5 below the provided parameter value `number`.
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# --hints--
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`multiplesOf3and5(10)` should return a number.
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```js
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assert(typeof multiplesOf3and5(10) === 'number');
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```
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`multiplesOf3and5(49)` should return 543.
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```js
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assert.strictEqual(multiplesOf3and5(49), 543);
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```
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`multiplesOf3and5(1000)` should return 233168.
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```js
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assert.strictEqual(multiplesOf3and5(1000), 233168);
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```
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`multiplesOf3and5(8456)` should return 16687353.
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```js
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assert.strictEqual(multiplesOf3and5(8456), 16687353);
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```
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`multiplesOf3and5(19564)` should return 89301183.
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```js
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assert.strictEqual(multiplesOf3and5(19564), 89301183);
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```
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# --seed--
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## --seed-contents--
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```js
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function multiplesOf3and5(number) {
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return true;
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}
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multiplesOf3and5(1000);
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```
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# --solutions--
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```js
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const multiplesOf3and5 = (number) => {
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var total = 0;
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for(var i = 0; i < number; i++) {
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if(i % 3 == 0 || i % 5 == 0) {
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total += i;
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}
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}
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return total;
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};
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```
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