यदि \(A=\{1,2,3,4\}\) है और \(A\times B\) में कुल (28) अवयव हैं, तो (|B|) क्या होगा?
If \(A=\{1,2,3,4\}\) and \(A\times B\) has (28) elements, what is (|B|)?
Explanation opens after your attempt
B. (7)
Concept
Since (|A|=4) and \(4\cdot|B|=28\), we get (|B|=7). Divide to find the unknown cardinality.
Why this answer is correct
The correct answer is B. (7). Since (|A|=4) and \(4\cdot|B|=28\), we get (|B|=7). Divide to find the unknown cardinality.
Exam Tip
(|A|=4) और \(4\cdot|B|=28\), इसलिए (|B|=7)। अज्ञात कार्डिनलिटी के लिए भाग करें।
Login to save your score, XP, coins and progress.
