| 何階（nankai) |
|---|
| JLPT N5 GRAMMAR |
Meaning：なんかい means how many floors of a building.
階(かい) is used to indicate number of floors in a building and are counted as いっかい、にかい、さんがい、よんかい、ごかい、ろっかい、ななかい、はっかい、きゅうかい、じゅっかい・じっかい。
| 何階（nankai) |
|---|
| JLPT N5 GRAMMAR |
Meaning：なんかい means how many floors of a building.
階(かい) is used to indicate number of floors in a building and are counted as いっかい、にかい、さんがい、よんかい、ごかい、ろっかい、ななかい、はっかい、きゅうかい、じゅっかい・じっかい。