What is the meaning of doreka, doremo, and doredemo which is taken from dore?


So どれ means "which". When you add か,も,でも the "which" becomes "some,any,every"
definitions which for "which" I don't quite understand.




どれか is similar to 何か (something) or 誰か (somebody).  
どれか means one among several options.  
Example:  
この中のどれか、頂戴できましょうか.  
Can you give me one of these?

どれも is similar to いつも (always) or どこも (everywhere).  
どれも means all options.  
Example:  
どれも見事だ。They are all beautiful.

どれでも is similar to 誰でも (anyone) or 何でも (anything)  
どれでも means any one among several options.  
Example:  
その中でどれでも好きなのを買いなさい。Buy whichever you like.




どれか is similar to 何か (something) or 誰か (somebody).  
どれか means one among several options.  
Example:  
この中のどれか、頂戴できましょうか.  
Can you give me one of these?

どれも is similar to いつも (always) or どこも (everywhere).  
どれも means all options.  
Example:  
どれも見事だ。They are all beautiful.

どれでも is similar to 誰でも (anyone) or 何でも (anything)  
どれでも means any one among several options.  
Example:  
その中でどれでも好きなのを買いなさい。Buy whichever you like.

