Math Problem Statement
Um grupo de 7 alunos entram no elevador do Bloco B. Cada aluno descerá aleatoriamente em um dos 11 andares com mesma probabilidade. Calcule a probabilidade de que todos os alunos desçam em andares diferentes.
Solution
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Math Problem Analysis
Mathematical Concepts
Probability
Combinatorics
Permutations
Formulas
Permutations formula P(n, k) = n! / (n - k)!
Theorems
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Suitable Grade Level
Advanced High School
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