railway RRB Technician Grade 1 Mock Test 2024 Mathematics Sets Operations on Sets

যদি A এবং B যেকোনো দুটি সেট হয়, তাহলে A ∩ (A ∪ B) সমান কত?

1
A এর পরিপূরক
2
B এর পরিপূরক
3
B
4
A
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