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Q51Section B (Part B)51 of 120

Random walk on Z2025\mathbb Z_{2025} with uniform nonzero steps

Let Z1,Z2,…Z_1,Z_2,\dots be a sequence of independent and identically distributed random variables having discrete uniform distribution over {1,2,…,2024}\{1,2,\dots,2024\}. Let Yn=∑i=1nZiY_n=\sum_{i=1}^nZ_i, n≥2n\ge2. Further, let XnX_n be the remainder when YnY_n is divided by 20252025. Then, which of the following statements is true?

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