Hi,

I think there is a mistake in the solution proposed of the Problem 99 because it seems to me it doesn’t check the first item in the array.

For this reason the test done with `testArray1`

fails because the solution is `[492798,527927]`

(the first item) while the solution reported on the page of the problem says " `largestExponential(testArray1)`

should return `[840237, 507276]`

" and you can check that this is false by comparing these two in Wolfram Alpha.

## Code in the guide

## Summary

```
function largestExponential(baseExp) {
let maximum = 0;
let indexOfMaximum = 0;
for (let i = 1; i < baseExp.length; i++) { // I think 'i' should start from 0
const curValue = Math.log(baseExp[i][0]) * baseExp[i][1];
if (curValue > maximum) {
maximum = curValue;
indexOfMaximum = i;
}
}
return baseExp[indexOfMaximum];
}
```

**Challenge:** Problem 99: Largest exponential

**Link to the challenge:**