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I lost my password
Date: 2007
Page count: 220 pages
Format: B/5
ISBN: 978-963-7546-38-9
Category: in Hungarian and English

Original price: 290 Ft

Let's make friends with numbers!

The most common "grey" numbers disclose their secrets to the readers step by step. Readers become familiar with the "friendly" numbers, the "perfect" numbers, the triangle- and polygon-numbers, and many more tricky numbers. We recommend this exploration in the number theory to 12-16 years old.


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