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
Correct Answer

B. (6)

Step 1

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.

Step 2

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.

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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))?

Correct Answer: B. (6). Explanation: (6) तत्वों में से (5) चुनने के तरीके \(\binom{6}{5}=6\) हैं। हर चयन घात समुच्चय का एक तत्व है। / The number of ways to choose (5) elements from (6) is \(\binom{6}{5}=6\). Each choice is one element of the power set.

Which concept should I revise for this Mathematics MCQ?

The number of ways to choose (5) elements from (6) is \(\binom{6}{5}=6\). Each choice is one element of the power set.

What exam hint can help solve this Mathematics question?

(6) तत्वों में से (5) चुनने के तरीके \(\binom{6}{5}=6\) हैं। हर चयन घात समुच्चय का एक तत्व है।