यदि \(A=\{1,2,3\}\) और \(B=\{a,b\}\) हों, तो (A) से (B) में कुल फलनों की संख्या कितनी है?
If \(A=\{1,2,3\}\) and \(B=\{a,b\}\), what is the total number of functions from (A) to (B)?
Explanation opens after your attempt
Correct Answer
B. \(2^3=8\)
Concept
The number of functions is (n(B)^{n(A)}=23=8). In exams, do not confuse it with the number of relations \(2^{n(A)n(B)}\).
Why this answer is correct
The correct answer is B. \(2^3=8\). The number of functions is (n(B)^{n(A)}=23=8). In exams, do not confuse it with the number of relations \(2^{n(A)n(B)}\).
Exam Tip
फलनों की संख्या (n(B)^{n(A)}=23=8) है। परीक्षा में संबंधों की संख्या \(2^{n(A)n(B)}\) से भ्रम न करें।
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