What about "Utazunk a hatvanhatodik buszon"???
I reckon that is rendben mate
Hatvanhatodik = 66th Hetvenhetedik = 77th
What's wrong with "A hetvenegyedik buszon mi utazunk."? This was one of the 3 choices. I selected the correct one, above, and this other one with "mi" in it. I don't know why it was rejected.
The number is wrong.
Is this used for bus line numbers?
No. That would be “a hatvanhatos buszon”. On bus number 66.
Ah, it's the same as in German with the -er suffix