यदि \(A=\{1,2,3\}\) और \(B=\{a,b\}\) हों तो \(A\times B\) के कितने उपसमुच्चय (A) से (B) में फलन नहीं हैं?
If \(A=\{1,2,3\}\) and \(B=\{a,b\}\), how many subsets of \(A\times B\) are not functions from (A) to (B)?
Explanation opens after your attempt
C. (56)
Concept
There are \(2^6=64\) total subsets and \(2^3=8\) functions. Hence non-function subsets are (64-8=56).
Why this answer is correct
The correct answer is C. (56). There are \(2^6=64\) total subsets and \(2^3=8\) functions. Hence non-function subsets are (64-8=56).
Exam Tip
कुल उपसमुच्चय \(2^6=64\) हैं और फलन \(2^3=8\) हैं। इसलिए फलन नहीं होने वाले उपसमुच्चय (64-8=56) हैं।
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