diff --git a/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-63-powerful-digit-counts.md b/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-63-powerful-digit-counts.md
index 661240b19c..02c9603685 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-63-powerful-digit-counts.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-63-powerful-digit-counts.md
@@ -10,20 +10,74 @@ dashedName: problem-63-powerful-digit-counts
The 5-digit number, 16807 = 75, is also a fifth power. Similarly, the 9-digit number, 134217728 = 89, is a ninth power.
-How many `n`-digit positive integers exist which are also an `n`th power?
+Complete the function so that it returns how many positive integers are of length `n` and an `n`th power.
# --hints--
-`powerfulDigitCounts()` should return a number.
+`powerfulDigitCounts(1)` should return a number.
```js
-assert(typeof powerfulDigitCounts() === 'number');
+assert(typeof powerfulDigitCounts(1) === 'number');
```
-`powerfulDigitCounts()` should return 49.
+`powerfulDigitCounts(1)` should return `9`.
```js
-assert.strictEqual(powerfulDigitCounts(), 49);
+assert.strictEqual(powerfulDigitCounts(1), 9);
+```
+
+`powerfulDigitCounts(2)` should return `6`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(2), 6);
+```
+
+`powerfulDigitCounts(3)` should return `5`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(3), 5);
+```
+
+`powerfulDigitCounts(4)` should return `4`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(4), 4);
+```
+
+`powerfulDigitCounts(5)` should return `3`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(5), 3);
+```
+
+`powerfulDigitCounts(6)` should return `3`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(6), 3);
+```
+
+`powerfulDigitCounts(7)` should return `2`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(7), 2);
+```
+
+`powerfulDigitCounts(8)` should return `2`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(8), 2);
+```
+
+`powerfulDigitCounts(10)` should return `2`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(10), 2);
+```
+
+`powerfulDigitCounts(21)` should return `1`.
+
+```js
+assert.strictEqual(powerfulDigitCounts(21), 1);
```
# --seed--
@@ -31,16 +85,38 @@ assert.strictEqual(powerfulDigitCounts(), 49);
## --seed-contents--
```js
-function powerfulDigitCounts() {
+function powerfulDigitCounts(n) {
return true;
}
-powerfulDigitCounts();
+powerfulDigitCounts(1);
```
# --solutions--
```js
-// solution required
+function powerfulDigitCounts(n) {
+ function countDigits(num) {
+ let counter = 0;
+ while (num > 0) {
+ num = Math.floor(num / 10);
+ counter++;
+ }
+ return counter;
+ }
+
+ let numbersCount = 0;
+
+ let curNum = 1;
+ while (curNum < 10) {
+ let power = n;
+ if (power === countDigits(curNum ** power)) {
+ numbersCount++;
+ }
+ curNum++;
+ }
+
+ return numbersCount;
+}
```