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In a party attended by 27 persons, each clinch their glass with every other. How many glass clinches?

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In a party attended by 27 persons, each clinch their glass with every other. How many glass clinches?
posted Aug 30 by Madhavi Latha

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2 Answers

+1 vote

The first person- 26, the second- 25 excluding the first person and so on:
26+25+24+...+2+1=351 glass clinches

answer Aug 31 by Hanifa Mammadov
–1 vote

(27 x 28)/2 = 378 glass clinches.

answer Aug 31 by Sv Ramana



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