"There are many exercises in this book."
Translation:W tej książce jest dużo ćwiczeń.
March 28, 2016
I disagree. http://sjp.pwn.pl/poradnia/haslo/duzo-i-b-wiele-b;7453.html it is said that "dużo" and "wiele" can be used in both forms.
Even if... Your comment agrees with me, because "ćwiczenie w książce" is rather countable, they're even numbered.