Math Problem Statement
How many number of at least three different digit numbers can be formed from the integers 1,2,3,4,5,6?
Solution
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Math Problem Analysis
Mathematical Concepts
Combinatorics
Permutations
Factorials
Formulas
Permutation formula: nPr = n! / (n - r)!
Theorems
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Suitable Grade Level
Grades 10-12
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