📘 set theory, probability, boolean algebra, linear algebra
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Set Theory Probability
1. **Set Theory Problem (A)**: Given sets $A=\{1,2,4,5\}$, $B=\{2,3,5,6\}$, $C=\{4,5,6,7\}$, verify:
(a) $A - (B \cap C) = (A - B) \cup (A - C)$