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lf \( \Large A=\{ 1, 2, 3, 4, 5, 6 \},\ B=\{ 4, 5, 6 \} \), then \( \Large n \left(A\cap B\right) \)
A) 3
B) 6
C) 4
D) 2
Correct answer:
A) 3
Description for Correct answer:
\( \Large A = \{ 1,2,3,4,5,6 \} \)
\( \Large B = \{ 4,5,6 \} \)
\( \Large A\cap B = \{ 4,5,6 \} \)
\( \Large n \left(A\cap B\right) = 3 \)
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