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Omni-MATH / Find the number of 20-tuples of integers x₁,…,x₁₀,y₁,…,y₁₀ with the following properties: - 1≤x_(i)≤10 and 1≤y_(i)≤10 for each i; - x_(i)≤x_(i+1) for i=1,…,9; - if x_(i)=x_(i+1), t… · Discussion

Discussing Find the number of 20-tuples of integers x₁,…,x₁₀,y₁,…,y₁₀ with the following properties: - 1≤x_(i)≤10 and 1≤y_(i)≤10 for each i; - x_(i)≤x_(i+1) for i=1,…,9; - if x_(i)=x_(i+1), t… · Omni-MATH

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