यदि \(A=\{1,2,3\}\) और \(B=\{1,2\}\), तो \(A\times B\) के कितने उपसमुच्चय (A) से (B) में फलन हैं?
If \(A=\{1,2,3\}\) and \(B=\{1,2\}\), how many subsets of \(A\times B\) are functions from (A) to (B)?
Explanation opens after your attempt
B. (8)
Concept
A function is a subset of \(A\times B\) where one pair is chosen for each element of (A) from (2) choices. Total is \(2^3=8\).
Why this answer is correct
The correct answer is B. (8). A function is a subset of \(A\times B\) where one pair is chosen for each element of (A) from (2) choices. Total is \(2^3=8\).
Exam Tip
फलन \(A\times B\) का ऐसा उपसमुच्चय है जिसमें (A) के हर अवयव के लिए (2) में से एक जोड़ी चुनी जाती है। कुल \(2^3=8\) हैं।
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