यदि \(A=\{a,b,c,d,e,f,g\}\) है, तो (\mathcal{P}(A)) में ठीक (6) तत्व वाले उपसमुच्चयों की संख्या कितनी है?
If \(A=\{a,b,c,d,e,f,g\}\), how many subsets with exactly (6) elements are in (\mathcal{P}(A))?
Explanation opens after your attempt
B. (7)
Concept
The number of ways to choose (6) elements from (7) is \(\binom{7}{6}=7\). Each choice is a subset.
Why this answer is correct
The correct answer is B. (7). The number of ways to choose (6) elements from (7) is \(\binom{7}{6}=7\). Each choice is a subset.
Exam Tip
(7) में से (6) तत्व चुनने के तरीके \(\binom{7}{6}=7\) हैं। हर चयन एक उपसमुच्चय है।
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