यदि \(A=\{1,2,3\}\) है तो (A) के कम से कम दो तत्वों वाले उपसमुच्चयों की संख्या कितनी है?
If \(A=\{1,2,3\}\) then how many subsets of (A) have at least two elements?
Explanation opens after your attempt
Correct Answer
B. (4)
Concept
There are (3) subsets with two elements and (1) subset with three elements, so the total is (4). In exams add all larger sizes for "at least".
Why this answer is correct
The correct answer is B. (4). There are (3) subsets with two elements and (1) subset with three elements, so the total is (4). In exams add all larger sizes for "at least".
Exam Tip
दो तत्वों वाले (3) और तीन तत्वों वाला (1) उपसमुच्चय है इसलिए कुल (4) हैं। परीक्षा में "कम से कम" में सभी बड़े आकार जोड़ें।
Login to save your score, XP, coins and progress.