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Competitive Stats
Q1Section I (General (compulsory))1 of 190

Only the closed shrinking intervals share a common point

Let for n∈Nn\in\mathbb{N}, In=(0,1/n),Jn=[0,1/n],Kn=(n,∞)I_n=(0,1/n), J_n=[0,1/n], K_n=(n,\infty) and Ln=[n,∞)L_n=[n,\infty). Which of the following sets is non-empty?

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