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If A = {1,2,3} and B = {2,3,4}, then A ∪ B =
A{2,3}
B{}
C{1,4}
D{1,2,3,4}
Answer & Solution
Correct answer: D. {1,2,3,4}
1. Union contains all distinct elements from both.
2. {1,2,3,4}.
3. Hence {1,2,3,4}.
_Source: UGC NET Paper 1 Study Book (ugc-net.com class notes) — Set Theory_