Top network posts

• 21 Some four clubs have exactly $1$ student in common
• 15 Ratio of product from one point and minimum distance
• 13 Integer solutions of $x^3-x+9=5y^2$
• 12 Inequality $(1+x_1)(1+x_2)\ldots(1+x_n)\left(\frac{1}{x_1}+\frac{1}{x_2}+\cdots+\frac{1}{x_n}\right)\geq 2n^2.$
• 11 Time for all ants to traverse cube
• 11 Number of $K_{10}$ always increases
• 10 Every $3\times 3$ square has even number of painted cells
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