यदि \(f:A\to B\) में \(A=\{2,4\}\) और \(B=\{1,3,5\}\) है तो (f) का कौन सा रूप फलन हो सकता है?
If \(f:A\to B\) where \(A=\{2,4\}\) and \(B=\{1,3,5\}\), which form of (f) can be a function?
Explanation opens after your attempt
A. ({(2,1),(4,5)})
Concept
Both (2) and (4) have exactly one image. In the other options an input is missing or repeated with different images.
Why this answer is correct
The correct answer is A. ({(2,1),(4,5)}). Both (2) and (4) have exactly one image. In the other options an input is missing or repeated with different images.
Exam Tip
(2) और (4) दोनों का ठीक एक प्रतिबिंब है। बाकी विकल्पों में कोई इनपुट छूटा है या दो बार आया है।
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