I heard the problems from one OG book is repeated in another. Is it true?

The three latest editions combined, don’t have a common question/problem; that is: OG 11th Edition, OG verbal & OG quant. Do not have repeats. I’ll write it in more simple way:
A] OG-11th Edition + OG verbal + OG quant = No repeat
B] OG-11th Edition + OG-10th Edition: No repeat.
C] OG-10th Edition + OG verbal + OG quant : Many repeats (not a recommended combination)