French language Q&A Forum

I really enjoyed this exercise. Maybe I still have a bit of that young child in me, but I found it very useful in learning some of the vocabulary. And, fun, too.

My question: "Les livres etalent leur savoir..."

Since one cannot tell from the dictation if "savoir" is singular or plural, would it be incorrect to write, "Les livres etalent leurs savoirs..."? This was the only mistake that I made, and I hesitated as to whether or not I should use the singular or the plural. I chose the plural, "leurs savoirs" since each book would have its own individual knowledge to show off rather than the books showing off a shared knowledge together. 

Maybe both could be correct: "leur savoir" and "leurs savoirs" in this case.

Merci pour votre aide !