The first person- 26, the second- 25 excluding the first person and so on: 26+25+24+...+2+1=351 glass clinches
(27 x 28)/2 = 378 glass clinches.
In a party there are 24 persons present. If each of them shakes hand with all the other persons, in total how many handshakes will takes place?
In a party there are 123 persons present. If each of them shakes hand with all the other persons, in total how many handshakes will takes place?
All attendees to a party are introduced to one another. 21 handshakes are made in total. How many people are attending the party?
In an interview a boy was asked an unusual question 'How two persons sitting with a table in between them cant see each other?' He was unable to reply. Can you?
