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Grade: 12th pass
        
In occasion of new year every students of this class exchange the greeting card with other students if toatal conjuction of card 600 then find the no of student .
Plz analyse it in better way or easily or solve .
5 months ago

Answers : (1)

Saurabh Koranglekar
askIITians Faculty
3177 Points
							Dear student

Lets start with 2 people - 2 exchange
3 people - 6 exchange , 4 people - 12 exchange

Similarly n people - n*(n-1)
For 600 exchange - we have n = 25

Regards
5 months ago
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