यदि \(A=\emptyset\) और \(B=\{1,2\}\) है तो (A) से (B) में कितने फलन होते हैं?
If \(A=\emptyset\) and \(B=\{1,2\}\), how many functions are there from (A) to (B)?
Explanation opens after your attempt
Correct Answer
A. (1)
Concept
From an empty domain, one empty function is considered. Counting also gives \(|B|^0=1\).
Why this answer is correct
The correct answer is A. (1). From an empty domain, one empty function is considered. Counting also gives \(|B|^0=1\).
Exam Tip
रिक्त प्रांत से एक रिक्त फलन माना जाता है। गिनती से भी \(|B|^0=1\) मिलता है।
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