\(यदि (U={1,2,\ldots,40}), (A={x:x \in U\) तथा \(2 \mid x}), (B={x:x \in U\) तथा \(5 \mid x}), तो (n(A' \cap B')) क्या है\)?
\(If (U={1,2,\ldots,40}), (A={x:x \in U\) and \(2 \mid x}), and (B={x:x \in U\) and \(5 \mid x}), what is (n(A' \cap B'))\)?
Explanation opens after your attempt
Correct Answer
A. (16)
Concept
(A' \cap B'=\(A \cup B\)'). Numbers divisible by (2) or (5) are (24), so the complement is (40-24=16).
Why this answer is correct
The correct answer is A. (16). (A' \cap B'=\(A \cup B\)'). Numbers divisible by (2) or (5) are (24), so the complement is (40-24=16).
Exam Tip
(A' \cap B'=\(A \cup B\)') है। (2) या (5) से विभाज्य संख्याएं (24) हैं, इसलिए पूरक (40-24=16) है।
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