Length (r) strings में exactly (s) distinct symbols use हों तो (s!,S(r,s)) किसे count करता है?
In length (r) strings with exactly (s) distinct symbols used, what does (s!,S(r,s)) count?
Explanation opens after your attempt
A. (r) positions से selected (s) symbols पर onto assignmentsOnto assignments from (r) positions to selected (s) symbols
Simple Explanation
Stirling part positions को non-empty groups में बांटता है और (s!) groups को symbols assign करता है। परीक्षा में exactly used symbols को onto mapping समझें। / The Stirling part partitions positions into non-empty groups and (s!) assigns groups to symbols. In exams treat exactly used symbols as onto mapping.
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