यदि \(P \cap Q = \varnothing\) तथा \(P \cup Q = U\) है, तो \(P^c\) किसके बराबर होगा?
If \(P \cap Q = \varnothing\) and \(P \cup Q = U\), then \(P^c\) is equal to which set?
Explanation opens after your attempt
A. \(Q\)
Simple Explanation
दिया है कि \(P\) और \(Q\) असंबद्ध हैं तथा उनका संघ सार्वत्रिक समुच्चय \(U\) है। इसलिए \(Q\), \(P\) में न होने वाले सभी अवयवों का समुच्चय है, अर्थात \(Q = P^c\)। विकल्प \(P\) सही नहीं है, क्योंकि वह स्वयं मूल समुच्चय है, उसका पूरक नहीं। परीक्षा-युक्ति: यदि \(P \cap Q = \varnothing\) और \(P \cup Q = U\), तो सीधे \(P^c = Q\) तथा \(Q^c = P\) लिखें। / The sets \(P\) and \(Q\) are disjoint, and their union is the universal set \(U\). Therefore, \(Q\) contains exactly those elements of \(U\) that are not in \(P\), so \(P^c = Q\). Option \(P\) is incorrect because it is the original set, not its complement. Exam tip: From \(P \cap Q = \varnothing\) and \(P \cup Q = U\), conclude directly that \(P^c = Q\) and \(Q^c = P\).
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