Math Problem Statement
希望小学音乐兴趣小组又38人，有20人会手风琴，18人会钢琴，24人会电子琴，其中既会手风琴又会钢琴的有8人，既会电子琴又会钢琴的有10人，既会手风琴又会电子琴的有8人，则这三种琴都不会的至多有几人？
Solution
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Math Problem Analysis
Mathematical Concepts
Set theory
Combinatorics
Formulas
Principle of Inclusion-Exclusion
Theorems
Inclusion-Exclusion Principle
Suitable Grade Level
High school
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