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
C. (27)
Concept
Each element has three choices: in neither set, in (Y) only, or in both. Thus the total is \(3^3=27\).
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 \(3^3=27\).
Exam Tip
हर सदस्य के लिए तीन स्थितियां हैं: दोनों में नहीं, केवल (Y) में, या दोनों में। इसलिए कुल \(3^3=27\) है।
Login to save your score, XP, coins and progress.
