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प्रश्न
Let \[A = \left\{ x : x \in R, x \geq 4 \right\} \text{ and } B = \left\{ x \in R : x < 5 \right\}\] Then, \[n \left( A' \cap B' \right) =\]
विकल्प
(a) (4, 5]
(b) (4, 5)
(c) [4, 5)
(d) [4, 5]
उत्तर
(c) [4, 5)
\[A = \left\{ x : x \in R, x \geq 4 \right\} \text{ and } B = \left\{ x \in R : x < 5 \right\}\]
\[A \cap B = [4, 5)\]
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