The most popular tasks and puzzles. We train mind, memory and quick wits!

This collection includes original puzzles that are dissimilar to trivial training tasks - to solve them, you will need not only knowledge of mathematical formulas, but your whole ingenuity and potential of thinking. You can significantly enrich the piggy bank of cunning mathematical techniques that are also suitable for solving household problems. Together with this book, you will go the path of non -standard solutions that develop mind, memory, attention, logic and quick wit.
Be careful: sometimes in search of a trick hidden in the condition of the task, it is so easy to miss the right answer lying on the surface! Join the lovers of puzzles - look for non -standard solutions and decide them all to one!