Q1) 16 teams enter a competition. They are divided up into four Pools (A, B, C and D) of four teams each. Every team plays one match against the other teams in its Pool. After the Pool matches are completed: the winner of Pool A plays the second placed team of Pool B the winner of Pool B plays the second placed team of Pool A the winner of Pool C plays the second placed team of Pool D the winner of Pool D plays the second placed team of Pool C The winners of these four matches then play semi-finals, and the winners of the semi-finals play in the final. How many matches are played altogether? [5 marks]