यदि \(A=\{1,2\}\) और \(B=\{x,y,z\}\) हों, तो (A) से (B) में कुल कितने फलन बन सकते हैं?
If \(A=\{1,2\}\) and \(B=\{x,y,z\}\), how many functions can be formed from (A) to (B)?
Explanation opens after your attempt
Correct Answer
B. (9)
Concept
Each of the (2) elements of (A) has (3) choices in (B), so total functions are \(3^2=9\). In exams, remember the formula (n(B)^{n(A)}).
Why this answer is correct
The correct answer is B. (9). Each of the (2) elements of (A) has (3) choices in (B), so total functions are \(3^2=9\). In exams, remember the formula (n(B)^{n(A)}).
Exam Tip
(A) के (2) तत्वों में से प्रत्येक के लिए (B) की (3) पसंद हैं इसलिए कुल \(3^2=9\) फलन हैं। परीक्षा में सूत्र (n(B)^{n(A)}) याद रखें।
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