Question

Hadley’s softball team has a phone tree in case a game is canceled. The coach calls 3 players. Then each of those players calls 3 players, and so on. How many players will be notified during the third round of calls?

Answer 1

           1                                2                            3
   1      2        3           1        2       3            1       2      3
123   123   123       123   123   123       123  123  123
3          3        3            3      3           3          3       3        3
3(9)
27