Since a maths test is coming up, I thought I'd read something related with maths.
This book is about Robert, who discovers the Number Devil instead of his usual nightmares. The Number Devil whisks Robert away into a world of triangle numbers, square roots and irrational numbers. Tey start to have a bond, but the Number Devil leaves at the end. Robert uses the knowledge he gained in his dreams and used it to solve the questions! I wish the Number Devil came to visit me...
That's what i read too! I have it at home and it's in Korean 수학귀신
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