Math Problem Statement
Сколько 6-значных чисел содержат ровно 3 различные цифры?
Solution
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Math Problem Analysis
Mathematical Concepts
Combinatorics
Permutations
Factorials
Binomial Coefficients
Formulas
Binomial coefficient formula: \( \binom{n}{k} = \frac{n!}{k!(n-k)!} \)
Theorems
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Suitable Grade Level
High School