**Tell us what’s happening:**

Ok. Unless my math has become bad but how is the smallest common multiple of 1 and 5 equal to 60? The code I wrote gives me 5, which by my math is correct.

**Your code so far**

```
function smallestCommons(arr) {
var a, b, r;
a = arr[0];
b = arr[1];
function GCD(a,b){
if (a > b && b !== 0){
r = a % b;
if ( r === 0){ return b;}
else {return GCD(b,r);}
}
if (b > a && a !== 0){
r = b % a;
if ( r === 0){ return a;}
else {return GCD(a,r);}
}
if (a===b && b !== 0) { return a;}
if ( b === 0 && a !== 0) { return a;}
if (a === 0 && b !== 0) { return b;}
}
return (a*b/GCD(a,b));
}
smallestCommons([1,5]);
```

**Your browser information:**

Your Browser User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36`

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**Link to the challenge:**