Let U={1,2,…,10}U = \{1, 2, \dots, 10\}U={1,2,…,10}. Let A={x∈U:x is composite}A = \{x \in U : x \text{ is composite}\}A={x∈U:x is composite} and B={x∈U:x is even}B = \{x \in U : x \text{ is even}\}B={x∈U:x is even}. Find n(AΔB)n(A \Delta B)n(AΔB).
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