यदि \(A=\{w,x,y,z\}\) है तो (\mathcal{P}(A)) में कितने तीन तत्व वाले उपसमुच्चय होंगे?
If \(A=\{w,x,y,z\}\), how many three element subsets are in (\mathcal{P}(A))?
Explanation opens after your attempt
C. (4)
Concept
There are (4) ways to choose three elements from four. So there are (4) three element subsets.
Why this answer is correct
The correct answer is C. (4). There are (4) ways to choose three elements from four. So there are (4) three element subsets.
Exam Tip
चार तत्वों में से तीन चुनने के (4) तरीके हैं। इसलिए तीन तत्व वाले उपसमुच्चय (4) हैं।
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