Chapter R - Review of Basic Concepts - R.1 Sets - R.1 Exercises - Page 8: 78

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RECALL: (1) The symbol $\cap$ represents intersection of sets (2) The intersection of sets A and B is the set that contains all the common elements of A and B. The elements that are common to the two given sets are 1, 2, and 4.. This means that the intersection of the two given sets is: $\left\{1, 2, 4\right\}$. Thus, the given statement is false..