(7) people में से (3) को क्रम वाली queue में चुनने की count \(^{7}C_3\cdot3!\) क्यों है?
Why is the count for choosing (3) people from (7) into an ordered queue equal to \(^{7}C_3\cdot3!\)?
Explanation opens after your attempt
A. पहले group चुनते हैं फिर उस group को order देते हैंFirst choose the group then order that group
Simple Explanation
Queue में selected people की order meaningful होती है। परीक्षा में ordered selection को combination times factorial से derive करें। / Order of selected people is meaningful in a queue. In exams derive ordered selection as combination times factorial.
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