* Small private planes: Often have one or two engines.
* Commercial airliners: Typically have two or four engines, although some larger models can have more.
* Cargo planes: Can have two, four, or even six engines, depending on the size and weight of the cargo they carry.
* Military aircraft: Can range from one to several engines, depending on the aircraft's purpose.
So there's no single answer to how many engines are in an airplane. It all depends on the specific aircraft!
