Part of the Undergraduate Texts in Mathematics book series (UTM)
These days school children are taught about sets. A second grader* was asked to name “the set of girls in his class.” This can be done by a complete list such as:
A problem arises when there are duplicates. To distinguish between two Barbaras one must indicate their family names or call them B1 and B2. The same member cannot be counted twice in a set.
“Nancy, Florence, Sally, Judy, Ann, Barbara,…”
KeywordsVerbal Definition Rotten Apple Target Board Dirty Trick Elementary Probability Theory
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© Springer-Verlag New York Inc. 1979