यदि \(A=\{1,2,3,4\}\) और \(B=\{a,b,c\}\) हों, तो कौन-सा विकल्प फलन नहीं है क्योंकि (4) की छवि नहीं है?
If \(A=\{1,2,3,4\}\) and \(B=\{a,b,c\}\), which option is not a function because (4) has no image?
Explanation opens after your attempt
A. ({(1,a),(2,b),(3,c)})
Concept
In option (A), there is no pair for (4). In exams, every domain element must be included for a function.
Why this answer is correct
The correct answer is A. ({(1,a),(2,b),(3,c)}). In option (A), there is no pair for (4). In exams, every domain element must be included for a function.
Exam Tip
विकल्प (A) में (4) के लिए कोई युग्म नहीं है। परीक्षा में फलन के लिए हर प्रांत तत्व शामिल होना चाहिए।
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