Answer:There are 6 matches in each group
Step-by-step explanation:
The first round of the 2010 FIFA World Cup consisted of several groups of four teams each. Within each group, each of the four teams played each other once. Assuming the teams are A, B, C and D.. The way the teams in the group play each other would be
AB, CD first group matches.
AC, BD second group matches.
AD, BC. Third group matches
Therefore, the number of matches in each group would be 6