यदि \(A=\{1,2,3,4\}\), \(B=\{1,2,3,4,5\}\) और \(R=\{(a,b):a^2<b\}\) है, तो (|R|) क्या है?
If \(A=\{1,2,3,4\}\), \(B=\{1,2,3,4,5\}\), and \(R=\{(a,b):a^2<b\}\), what is (|R|)?
Explanation opens after your attempt
A. (5)
Concept
For (a=1), there are (4) values, and for (a=2), there is (1); none for the rest. Total is (5).
Why this answer is correct
The correct answer is A. (5). For (a=1), there are (4) values, and for (a=2), there is (1); none for the rest. Total is (5).
Exam Tip
(a=1) पर (4) और (a=2) पर (1) मान मिलते हैं, बाकी पर कोई नहीं। कुल (5) युग्म हैं।
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