U = {1, 2, 3, 4, 5, 6, 7, 8, 9} এবং A = {1, 2, 3, 8} হলে A এর পূরক সেট কোনটি ?
A {1, 3, 4, 5, 6}
B {2, 4, 6, 8}
C {1, 2, 3, 4, 7}
D {4, 5, 6, 7, 9}
Correct Answer: Option D
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