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No you cannot put windows 10 on a raspberry pi.
It depends on where you get it from, the one I got came with a bunch of different distros of Linux already on it.
Hard Drivin Pizza Cutter
Counter Strike C4 Prop
Infinity mirror and table (With casual tools)
Lean Pipe Computer Desks
Bentwood Rings with Stone Inlay
Raspberry Pi Arcade Table
Smartphone Wood Veneer Case
"N" Table - The N64 Logo End Table
Raspberry Pi as Hi-Fi player with RuneAudio
How to Make a Solar Powered Walkway
Build your own Mini Arcade Cabinet with Raspberry Pi
Gutless Joe Prop