# Project Euler Problems 1 to 100 - Problem 38: Pandigital multiples

### Tell us what’s happening:

pandigitalMultiples(8) should return 78156234,
pandigitalMultiples(9) should return 932718654.
Project Euler is a difficult mathematical theory which is no easy path to achieve success. Your help will surely be appreciated to accomplish this wonderful mathematical endeavor.

### Your code so far

``````function isPandigital(num) {
const str = num.toString();
if (str.length !== 9) return false;
const digits = new Set(str);
return digits.size === 9 && !digits.has('0');
}

function concatenatedProduct(num, n) {
let result = '';
for (let i = 1; i <= n; i++) {
result += (num * i).toString();
}
return parseInt(result, 10);
}

function pandigitalMultiples(limit) {
let maxPandigital = 0;
for (let num = 1; num < 10000; num++) {
let concatenated = '';
for (let n = 1; concatenated.length < 9; n++) {
concatenated = concatenatedProduct(num, n);
if (concatenated > maxPandigital && isPandigital(concatenated)) {
maxPandigital = concatenated;
}
}
}
return maxPandigital;
}

console.log(pandigitalMultiples(78156234)); // Should return 78156234
console.log(pandigitalMultiples(932718654)); // Should return 932718654

``````

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### Challenge Information:

Project Euler Problems 1 to 100 - Problem 38: Pandigital multiples

Can you talk to us in your own words about what you have tried and how you are stuck?