1)

Five children take part in a tournament. Each one has to play every other one. How many g€unes must they play


A) 8

B) 10

C) 24

D) 30

Answer:

Option B

Explanation:

(i) matches of the first player with other 4 players

(ii) matches of the second player with 3 players other than the first player

(iii) matches of the third player with 2 players other than the first and second players

(iv) match the fourth player with one player other than the first three players. So, number of matches played during the to[rnament =4 +3 +2 + 1= 10.