यदि (A) में (m) elements और (B) में (n) elements हैं, तो (A) से (B) में फलनों की संख्या क्या होगी?
If (A) has (m) elements and (B) has (n) elements, what is the number of functions from (A) to (B)?
Explanation opens after your attempt
A. \(n^m\)
Concept
Each of the (m) domain elements has (n) choices in the codomain, so total functions are \(n^m\). The exponent is always the domain size.
Why this answer is correct
The correct answer is A. \(n^m\). Each of the (m) domain elements has (n) choices in the codomain, so total functions are \(n^m\). The exponent is always the domain size.
Exam Tip
domain के हर (m) element के लिए codomain में (n) choices हैं, इसलिए कुल \(n^m\) फलन हैं। exponent हमेशा domain size पर होता है।
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