"The flag of Greece is blue and white."

Translation: Greklands flagga är blå och vit.

[DuoTaffer]

If someone doesn't mind could you quickly brief me on why it's vit and not vitt again? Thanks.

[Arnauti]

Flagga is an en word, therefore it is blå och vit. If we were speaking about ett hus it would be blått och vitt.

PS: declension table here: https://www.duolingo.com/skill/sv/Adjectives-1

[MedianAlco2]

I typed flaggan av grekland, why is that wrong here?

[Kevinlinton_]

Using "av" to denote what/who something belongs to isn't common in Swedish.

[deactivated user]

"Greklands flaggan är blå och vit"
I'm sorry but still I do not understand why this sentence can't be translated in this way. Shouldn't the word "flagga" be in bestämd form?

[Silsool]

Because you're technically transforming it into "Greece's flag" where, as you can see, the "the" disappears. The logic behind it stays the same as in English.