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# Don't know what I did wrong!

Not sure which part is wrong - every bit makes sense on my own end lol. Any help would be sincerely appreciated

logicalOperators.swift
```var results: [Int] = []

for n in 1...100 {
// Enter your code below
if n % 3 = 0 && n % 7 = 0
results.append(n)
}
```

## 1 Answer

Hi Paul,

I think we've covered this in a couple of other posts, but to clarify, the explanation is in this post; do let me know if you're still having problems.

I don't understand the 'comparison to 3' mod thing; I have to confess. I don't understand what 3 has to do with odd or even checking. As in my other post, 7 % 3 does not equal zero but 7 is odd; 9 % 3 is equal to zero, but 9 is odd.

So, that aside, you want to check for zero remainders using the % operator using not-2 (i.e. is odd) and 7. That means the number is divisible by not-2 and/or 7. The output of both those operations needs to be equal:

```n % 2 != 0 && n % 7 == 0
```

Make sense?

Steve.