If an airport Extreme is combined with one or more airport expresses, what is the max number of connections? Is it just 50, or 50 plus 10 for each Express?

I would like to set up a wireless network with an Airport Extreme, plus one or more Airport Expresses to extend the range. I know an Extreme supports 50 users and an Express 10 users, but when they're combined does the number of users go up according to the number of Expresses combined with the Extreme, or is it limited at 50 no-matter how many Expresses are added?
Thanks
Steve

50 users + 10 users + 10 users + etc. I am assuming that each Express device will be connected using a wired Ethernet connection.
But, unless you have a truly fantastic Internet connection with your ISP, things are going to be mighty slow on the network since all users split up the available bandwidth.
So, if you have a 50 Mbps Internet connection, 50 users will have approximately 1 Mbps of bandwidth to work with. Few of us would consider having a 1 Mbps service in our home, even if we only had one computer....way too slow.

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