Challenging Mathematical Problems With Elementary Solutions (Volume 2)

The product is excellent. It is quite explanatory. The exercises have various levels of difficulty. Ideal for those who want to delve in solving problems.

I've read the Russian original of this book. It is wonderful. I really enjoyed it, and often used the ideas I found there to solve other problems. Highly recommended, espesially for the high school students unterested in mathematics, but extremely interesting for anybody who likes math.

Excellent

I thought the exercises were more difficult, and more interesting. It's a good book, but nothing excellent.

Très intéressant, un livre à posséder pour tout amateur d'énigmes. Attention la plupart des problèmes restent inabordables pour les non mathématiciens

Es un libro en pequeño formato que puede hacer las delicias de todo entusiasta de las matemáticas. La calidad de la impresión es además buena

Try this book if you want to tease your brain!

Un poco más limitado que el primer volumen, pero con desarrollos muy interesantes.