Maybe I don’t quite understand this, but I would think that the left page is always an even number and the right page an odd number. So, you could always avoid getting out by not using the left page. Or was there some other aspect that determined whether the left or right page would be selected? Or maybe the book had page numbers only on one side?
Oops. I don’t quite remember, but I know there was some logic that made the game work. I think you always did look at the left page, but you counted ‘8’ as one. So, you had 2, 4, 6, 8 (which became 1), and 0, which gave you out.
[As it turns out, Kridaya has a far better explanation of book cricket on his website.]