यदि \(A=\{2,3,4,5,6,7,8\}\), \(B=\{1,2,3,4,5\}\) और \(R=\{(a,b):a+3b=17\}\) है, तो (|R|) क्या है?
If \(A=\{2,3,4,5,6,7,8\}\), \(B=\{1,2,3,4,5\}\), and \(R=\{(a,b):a+3b=17\}\), what is (|R|)?
Explanation opens after your attempt
Correct Answer
B. (2)
Concept
The condition gives ((8,3)) and ((5,4)), so (|R|=2). Check possible (b)-values systematically.
Why this answer is correct
The correct answer is B. (2). The condition gives ((8,3)) and ((5,4)), so (|R|=2). Check possible (b)-values systematically.
Exam Tip
शर्त से ((8,3)) और ((5,4)) मिलते हैं, इसलिए (|R|=2)। समीकरण में (b) के संभावित मान व्यवस्थित रूप से जाँचें।
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