यदि (A) में (3) सदस्य हैं, तो कितने क्रमित युग्म ((X,Y)) संभव हैं जिनमें \(X\subseteq Y\subseteq A\)?

If (A) has (3) elements, how many ordered pairs ((X,Y)) are possible such that \(X\subseteq Y\subseteq A\)?

Explanation opens after your attempt
Correct Answer

C. (27)

Step 1

Concept

Each element has three choices: in neither set, in (Y) only, or in both. Thus the total is \(3^3=27\).

Step 2

Why this answer is correct

The correct answer is C. (27). Each element has three choices: in neither set, in (Y) only, or in both. Thus the total is \(3^3=27\).

Step 3

Exam Tip

हर सदस्य के लिए तीन स्थितियां हैं: दोनों में नहीं, केवल (Y) में, या दोनों में। इसलिए कुल \(3^3=27\) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (A) में (3) सदस्य हैं, तो कितने क्रमित युग्म ((X,Y)) संभव हैं जिनमें \(X\subseteq Y\subseteq A\)? / If (A) has (3) elements, how many ordered pairs ((X,Y)) are possible such that \(X\subseteq Y\subseteq A\)?

Correct Answer: C. (27). Explanation: हर सदस्य के लिए तीन स्थितियां हैं: दोनों में नहीं, केवल (Y) में, या दोनों में। इसलिए कुल \(3^3=27\) है। / Each element has three choices: in neither set, in (Y) only, or in both. Thus the total is \(3^3=27\).

Which concept should I revise for this Mathematics MCQ?

Each element has three choices: in neither set, in (Y) only, or in both. Thus the total is \(3^3=27\).

What exam hint can help solve this Mathematics question?

हर सदस्य के लिए तीन स्थितियां हैं: दोनों में नहीं, केवल (Y) में, या दोनों में। इसलिए कुल \(3^3=27\) है।