यदि \(A=\{1,2,3,4,5,6\}\) और \(B=\{2,4,6\}\) हैं, तो (A-B) में कितने अवयव हैं?
If \(A=\{1,2,3,4,5,6\}\) and \(B=\{2,4,6\}\), how many elements are in (A-B)?
Explanation opens after your attempt
A. (3)
Concept
(A-B={1,3,5}), so it has (3) elements. First find the difference, then count.
Why this answer is correct
The correct answer is A. (3). (A-B={1,3,5}), so it has (3) elements. First find the difference, then count.
Exam Tip
(A-B={1,3,5}) है, इसलिए इसमें (3) अवयव हैं। पहले अंतर निकालें, फिर गिनें।
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