Indirect questions: Vet du hvor han bor?

A direct question with a question word inverts: question word – verb – subject: Hvor bor Per? (Where does Per live?)

When the question sits inside another sentence, it becomes an indirect question and keeps normal statement order: question word – subject – verb:

• Vet du hvor Per bor? (Do you know where Per lives?)
• Kan du si meg når toget går? (Can you tell me when the train leaves?)
• Jeg vet ikke hva Emma gjør. (I don't know what Emma does.)

A yes/no question becomes om + statement order: Kommer Kari? → Jeg lurer på om Kari kommer. (I wonder if Kari is coming.)

Typical openings: Vet du …, Jeg lurer på …, Kan du si meg …, Jeg vet ikke …. The whole sentence ends with a question mark only when the opening part is itself a question.