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No, the 360 slim has no memory card slots.
about 30-40
It really depends on which games you get, as they use different amounts of memory.
It depends on how much memory a game takes up, you can usually get 3-4 games for 1gb of memory
you can have up to 9 pages or as many as your memory can hold depending on the size of the file.
Not alot about 2 games 3 being the max but if it is a demo 4 to 5
I know it can hold any Game cube card, and it can hold as many games as the memory space you have. Like, Harvest Moon: Magical Melody takes 57 Memory blocks, so what ever you had left you could use to save other games. Get it? Hope I helped!
it varys on how much memory a game takes but my guess is approximately 8-10 fully completed games
The internal memory can hold from 300-400 pictures.
Well, that depends. Most memory cards are 4 GB (for about $10 on Dealextreme.com) and can hold about 60-80 moderate-sized games. For $16 though, (on Dealextreme.com) you can get an 8GB memory card which can hold about 180-200 DS games.(I recommend it). But in order to use those DS games, you have to buy an R4 ($8.00 from Dealextreme.com) to transform the data from your computer into a data form that can be read by the DS. (By the way, I have an R4, and they are AMAZING!) ---This answer is courtesy of--- MegaChunkeyMonkey
You can have as many as your memory will hold.