Guess the Book with Your Fingers: 4-5 Years Old. Concept of Numbers

Author: Xiaoxiao Studio Compiler / Country:
Publisher:
Publish Date: 2004-03-01
Features: Actually, this is a digital combination problem. It just applies the pure digital combination to real life. A number can have different combinations, such as: 15=9624=6222=6. Did you get it right?

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