यदि \(A=\{1,2,3,4\}\), \(B=\{1,2\}\) और \(R={(x,y):x\) (y) से divisible है(}), तो (R) फलन क्यों नहीं है?
If \(A=\{1,2,3,4\}\), \(B=\{1,2\}\), and \(R={(x,y):x\) is divisible by (y)(}), why is (R) not a function?
Explanation opens after your attempt
A. (x=2) के लिए (y=1) और (y=2) दोनों possible हैंFor (x=2), both (y=1) and (y=2) are possible
Concept
(x=2) gets two images, so uniqueness fails. In divisibility relations, check all divisors in the codomain for one input.
Why this answer is correct
The correct answer is A. (x=2) के लिए (y=1) और (y=2) दोनों possible हैं / For (x=2), both (y=1) and (y=2) are possible. (x=2) gets two images, so uniqueness fails. In divisibility relations, check all divisors in the codomain for one input.
Exam Tip
(x=2) की दो images बनती हैं, इसलिए uniqueness नहीं रहती। divisibility relations में एक input के सभी divisors in codomain देखें।
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