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I dont understand what to do.

Hey guys, can someone please explain to me what to do? Thanks.

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

for n in 1...100 {
if
// End code
}
```

Hi Justus,

you need to use the && operator in the if statement and append the numbers that are both unequal and divisible by 7:

```var results: [Int] = []

for n in 1...100 {
if (n % 2 == 1) && (n % 7 == 0) {
results.append(n)
}
// End code
}
```

Btw. it is good practice to mark an answer as 'best answer' in your threads, if a successful solution has been posted. It lets others know that the answer has been given and no longer needs to be looked at. I posted an answer to your earlier thread about while-loops and it never received feedback from you.

Thanks, Henrik, but I dont understand your code, can you please explain?

Sure.

Quoting Apple: The remainder operator (a % b) works out how many multiples of b will fit inside a and returns the value that is left over (known as the remainder).

So the line

```if (n % 2 == 1) && (n % 7 == 0) {
```

means, that the remainder operator will work out how many 2s will fit inside 'n' and if the remainder is 1 and (&&) will then work out how many 7s will fit inside 'n' and if there is no remainder, if this is the case it will then

```results.append(n)
```

append 'n' to the 'results' array.

For example 'n' = 14 will not be added to the array because 2 x 7 = 14 -> no remainder - 'n' = 21 will be added because 2 x 10 = 20 (remainder of 1 to 21) or 2 x 11 = 22 (remainder of 1 to 21) and 7 x 3 = 21 ( no remainder)