The correct answer is:
white-red
weiß-rot
Independent study resource, not a BAMF website. Translations are study aids; the exam is in German.
Quick explanation
The state flag of Hamburg is white and red.
Why is this correct?
The state flag is red with a white castle in the centre.
Background
Besides the federal flag, every federal state has its own flag. The state flag is red with a white castle in the centre. The state flag flies, for example, at the state parliament, ministries and on public buildings on holidays. The coat of arms of Hamburg shows a white castle with three towers on a red background.
Why are the other answers wrong?
The other colour combinations do not belong to Hamburg: blue, white and red is the flag of Schleswig-Holstein; green, white and red is the flag of North Rhine-Westphalia; black and yellow is not the flag of any state.
Memory tip
Hamburg: white and red.
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