You can look at Harpercollins.com. Just type in warriors and looked for the Fourth Apprentice.
The number of pages in "The Fourth 'R'" may vary depending on the edition, font size, and formatting. Typically, a standard edition of this book contains around 300-400 pages.
You can not read the entirety of the Fourth Apprentice on any website yet, due to the fact that it has not been released. You can read a preview of the first few pages however on amazon.com.
Yes, I have read the first 50 pages of The fourth apprentice. Poppyfrost is expecting Berrynose's kits. Edit; The kits names are Molekit and Cherrykit.
The Midwife's Apprentice has 120 pages.
The Dragon's Apprentice has 376 pages.
The Beekeeper's Apprentice has 368 pages.
The Dragonslayer's Apprentice has 160 pages.
The Good Apprentice has 522 pages.
Dark Apprentice has 354 pages.
There are 122 pages in The Midwife's Apprentice.
the rangers apprentice book for has 266 pages.
Mother Warriors has 304 pages.