How many copies of Riordan's books have been sold in the US?
30 million
20 million
40 million
25 million
Answer
30 million copies of Riordan's books have been sold in the US, making him one of the best-selling authors in the country. His popular series, including the Percy Jackson and the Olympians and the Heroes of Olympus, have captivated readers of all ages with their exciting adventures and relatable characters. Riordan's success is a testament to his ability to create compelling stories that resonate with audiences.
Riordan's Realm: A Quiz on the Master of Mythical Adventures
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