यदि (A) में (5) तत्व हैं, तो (\mathcal{P}(A)) के कितने तत्व स्वयं एकल समुच्चय होंगे?
If (A) has (5) elements, how many elements of (\mathcal{P}(A)) will be singleton sets?
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Correct Answer
B. (5)
Concept
Singleton elements of (\mathcal{P}(A)) are one-element subsets of (A). Their number is \(\binom{5}{1}=5\).
Why this answer is correct
The correct answer is B. (5). Singleton elements of (\mathcal{P}(A)) are one-element subsets of (A). Their number is \(\binom{5}{1}=5\).
Exam Tip
(\mathcal{P}(A)) के एकल तत्व वे उपसमुच्चय हैं जिनमें (1) तत्व है। उनकी संख्या \(\binom{5}{1}=5\) है।
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