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What is Školjka?

Školjka is a web archive of math problems, a tool intended for primary and high school students training for math contests. It contains thousands of problems from various math contests in recent two decades.

Why Školjka?

Školjka supports searching by categories and difficulty, allowing students to quickly find the exact problems they are interested in. Likewise, Školjka can be helpful to mentors and teachers for preparing lectures.

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Recently added tasks

Neka je (a_n) niz definiran s a_1=1, a_2=2 i a_n = a_{n - 1} + (n - 1)a_{n - 2} \quad \text{za } n \geq 3.

Dokaži da vrijedi a_{2024} \geq \sqrt{2024!} .

3 months, 3 weeks

Neka su z_1, z_2 i z_3 kompleksni brojevi takvi da je |z_1|=|z_2|=|z_3|=1 te 4z_3 = 3(z_1 + z_2). Koliko je |z_1 - z_2|?

3 months, 3 weeks



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