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freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-218-perfect-right-angled-triangles.md
gikf eef1805fe6 fix(curriculum): clean-up Project Euler 201-220 (#42826)
* fix: clean-up Project Euler 201-220

* fix: corrections from review

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
2021-07-15 09:20:31 +02:00

1.2 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
5900f4461000cf542c50ff59 Problem 218: Perfect right-angled triangles 5 301860 problem-218-perfect-right-angled-triangles

--description--

Consider the right-angled triangle with sides a=7, b=24 and c=25.

The area of this triangle is 84, which is divisible by the perfect numbers 6 and 28.

Moreover it is a primitive right-angled triangle as gcd(a,b) = 1 and gcd(b,c) = 1.

Also c is a perfect square.

We will call a right-angled triangle perfect if:

  • it is a primitive right-angled triangle
  • its hypotenuse is a perfect square

We will call a right-angled triangle super-perfect if:

  • it is a perfect right-angled triangle
  • its area is a multiple of the perfect numbers 6 and 28.

How many perfect right-angled triangles with c ≤ {10}^{16} exist that are not super-perfect?

--hints--

perfectRightAngledTriangles() should return 0.

assert.strictEqual(perfectRightAngledTriangles(), 0);

--seed--

--seed-contents--

function perfectRightAngledTriangles() {

  return true;
}

perfectRightAngledTriangles();

--solutions--

// solution required