यदि \(A=\{a,b,c,d,e,f\}\) है, तो (\mathcal{P}(A)) में ठीक (5) तत्व वाले उपसमुच्चयों की संख्या कितनी होगी?
If \(A=\{a,b,c,d,e,f\}\), how many subsets with exactly (5) elements are in (\mathcal{P}(A))?
Explanation opens after your attempt
B. (6)
Concept
The number of ways to choose (5) elements from (6) is \(\binom{6}{5}=6\). Each choice is one element of the power set.
Why this answer is correct
The correct answer is B. (6). The number of ways to choose (5) elements from (6) is \(\binom{6}{5}=6\). Each choice is one element of the power set.
Exam Tip
(6) तत्वों में से (5) चुनने के तरीके \(\binom{6}{5}=6\) हैं। हर चयन घात समुच्चय का एक तत्व है।
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