Razvan Gelca Books

Mathematical Olympiad Challenges
Mathematical Olympiad Challenges

By Razvan Gelca, Titu Andreescu

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"Mathematical Olympiad Challenges is a rich collection of problems put together by two experienced and well-known professors and coaches of the U.S. International Mathematical Olympiad Team. Hundre...

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Mathematical Olympiad Challenges
Mathematical Olympiad Challenges

By Razvan Gelca, Titu Andreescu

Average: 0.00, 0 Ratings

This signficantly revised and expanded second edition of Mathematical Olympiad Challenges is a rich collection of problems put together by two experienced and well-known professors and coaches of t...

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If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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