यदि (A) में (4) अवयव हैं, तो (P(A)) के (2)-अवयवी उपसमुच्चयों की संख्या क्या है?

If (A) has (4) elements, what is the number of (2)-element subsets of (P(A))?

Explanation opens after your attempt
Correct Answer

C. (120)

Step 1

Concept

(P(A)) has \(2^4=16\) elements, so its (2)-element subsets are \(\binom{16}{2}=120\). Treat (P(A)) as a new set here.

Step 2

Why this answer is correct

The correct answer is C. (120). (P(A)) has \(2^4=16\) elements, so its (2)-element subsets are \(\binom{16}{2}=120\). Treat (P(A)) as a new set here.

Step 3

Exam Tip

(P(A)) में \(2^4=16\) अवयव हैं, इसलिए इसके (2)-अवयवी उपसमुच्चय \(\binom{16}{2}=120\) हैं। यहां (P(A)) को नया समुच्चय मानें।

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Mathematics Answer, Explanation and Revision Hints

यदि (A) में (4) अवयव हैं, तो (P(A)) के (2)-अवयवी उपसमुच्चयों की संख्या क्या है? / If (A) has (4) elements, what is the number of (2)-element subsets of (P(A))?

Correct Answer: C. (120). Explanation: (P(A)) में \(2^4=16\) अवयव हैं, इसलिए इसके (2)-अवयवी उपसमुच्चय \(\binom{16}{2}=120\) हैं। यहां (P(A)) को नया समुच्चय मानें। / (P(A)) has \(2^4=16\) elements, so its (2)-element subsets are \(\binom{16}{2}=120\). Treat (P(A)) as a new set here.

Which concept should I revise for this Mathematics MCQ?

(P(A)) has \(2^4=16\) elements, so its (2)-element subsets are \(\binom{16}{2}=120\). Treat (P(A)) as a new set here.

What exam hint can help solve this Mathematics question?

(P(A)) में \(2^4=16\) अवयव हैं, इसलिए इसके (2)-अवयवी उपसमुच्चय \(\binom{16}{2}=120\) हैं। यहां (P(A)) को नया समुच्चय मानें।