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id	challengeType	title
5900f3a41000cf542c50feb7	5	Problem 56: Powerful digit sum

Description

A googol (10100) is a massive number: one followed by one-hundred zeros; 100100 is almost unimaginably large: one followed by two-hundred zeros. Despite their size, the sum of the digits in each number is only 1. Considering natural numbers of the form, ab, where a, b < 100, what is the maximum digital sum?

Instructions

Tests

tests:
  - text: <code>euler56()</code> should return 972.
    testString: assert.strictEqual(euler56(), 972, '<code>euler56()</code> should return 972.');

Challenge Seed

function euler56() {
  // Good luck!
  return true;
}

euler56();

Solution

// solution required

973 B Raw Blame History