यदि \(A=\{1,2,3,4,5\}\) है तो (\mathcal{P}(A)) में कितने चार तत्व वाले उपसमुच्चय होंगे?
If \(A=\{1,2,3,4,5\}\), how many four element subsets are in (\mathcal{P}(A))?
Explanation opens after your attempt
B. (5)
Concept
There are (5) ways to choose four elements from five. Each time one different element is left out.
Why this answer is correct
The correct answer is B. (5). There are (5) ways to choose four elements from five. Each time one different element is left out.
Exam Tip
पांच तत्वों में से चार चुनने के (5) तरीके हैं। हर बार एक अलग तत्व छोड़ा जाता है।
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