Annen, annet and andre: another or other in Norwegian

Use this list

From	To
Your bus is cancelled. You need a different one. Vi må ta en ___ buss. Choose annen or annet or andre.	Vi må ta en annen buss. We have to take another bus. Buss is an indefinite singular en-noun: use annen.
You need a different map with walking paths. Har du et ___ kart? Choose annen or annet or andre.	Har du et annet kart? Do you have another map? Kart is an indefinite singular et-noun: use annet.
The first suggestion will not work. Ask for others. Har dere ___ forslag? Choose annen or annet or andre.	Har dere andre forslag? Do you have other suggestions? Forslag is plural here: use andre.
Of two buses, you need the other one. Vi skal ta den ___ bussen. Choose annen or annet or andre.	Vi skal ta den andre bussen. We are going to take the other bus. The definite pattern is den andre bussen.
Of two maps, this one is old; the other is new. Det ___ kartet er nytt. Choose annen or annet or andre.	Det andre kartet er nytt. The other map is new. The definite pattern is det andre kartet, even with an et-noun.
You want to do something else. Kan vi gjøre noe ___? Choose annen or annet or andre.	Kan vi gjøre noe annet? Can we do something else? Noe annet means something else.