29. What is the total number of matches, if 11 teams are participating in a double league tournament? (a): 10 (b) 55 (c) 66 (d) 110
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Explanation:
By simple permutation and combination,if we start with 1 team ,it has to play 9 matches.the 2nd team will also have to play 9 matches,but we exclude the match played with team ,so effectively while counting it is 8. In this way,all teams must play 9 matches.
Thus,total no. Of matches :9+8+7+6+5+4+3+2+1
That is,45 matches.
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