freeCodeCamp/curriculum/challenges/arabic/08-coding-interview-prep/project-euler/problem-20-factorial-digit-sum.arabic.md

id	challengeType	title	videoUrl	localeTitle
5900f3801000cf542c50fe93	5	Problem 20: Factorial digit sum

Description

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Instructions

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Tests

tests:
  - text: ''
    testString: 'assert.strictEqual(sumFactorialDigits(10), 27, "<code>sumFactorialDigits(10)</code> should return 27.");'
  - text: ''
    testString: 'assert.strictEqual(sumFactorialDigits(25), 72, "<code>sumFactorialDigits(25)</code> should return 72.");'
  - text: ''
    testString: 'assert.strictEqual(sumFactorialDigits(50), 216, "<code>sumFactorialDigits(50)</code> should return 216.");'
  - text: ''
    testString: 'assert.strictEqual(sumFactorialDigits(75), 432, "<code>sumFactorialDigits(75)</code> should return 432.");'
  - text: ''
    testString: 'assert.strictEqual(sumFactorialDigits(100), 648, "<code>sumFactorialDigits(100)</code> should return 648.");'

Challenge Seed

function sumFactorialDigits(n) {
  // Good luck!
  return n;
}

sumFactorialDigits(100);

Solution

// solution required