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# AI solution for JavaScript Quiz on BFE.dev

92. NaN

The code below outputs:

```
false
false
true
-1
true
NaN
NaN
NaN
```

Explanation:

`NaN == NaN`

returns`false`

because NaN is not equal to any value, not even itself.`NaN === NaN`

also returns`false`

for the same reason.`Object.is(NaN, NaN)`

returns`true`

because it is a special comparison operator that treats NaN as equal to itself.`[NaN].indexOf(NaN)`

returns`-1`

because the indexOf() method uses === to compare values, which returns false for NaN === NaN.`[NaN].includes(NaN)`

returns`true`

because it uses the same comparison as Object.is(), and considers NaN equal to itself.`Math.max(NaN, 1)`

returns`NaN`

because any comparison operation involving NaN results in NaN.`Math.min(NaN, 1)`

returns`NaN`

for the same reason.`Math.min(NaN, Infinity)`

also returns`NaN`

because any comparison operation involving NaN results in NaN.