Math Problem Statement
Во множествах A, B и C по 100 элементов, в их попарных пересечениях — по 50, в пересечении всех трех множеств — 20 элементов. Сколько элементов во множестве (A × B × C) ∩ (B × A × C) ∩ (C × B × A)
Solution
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Math Problem Analysis
Mathematical Concepts
Set Theory
Cartesian Product
Intersection of Sets
Formulas
(A × B × C) ∩ (B × A × C) ∩ (C × B × A)
A ∩ B ∩ C
Theorems
Intersection Property of Sets
Properties of Cartesian Products
Suitable Grade Level
Grade 11-12 or early university level
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