Jonathan o ne a hutsafetse go utlwa gore o tlhoka dibapadise tse 2 go feta tse a nang natso go nna le tse di lekaneng go dira sete sa dibapadise tse di tlhaotsweng gabotlhano go feta sete sa ga James, se se nang le dibapadise di le 80.  Jonathan o na le dibapadise di le kae gone jaanong?

A phone tree is used to contact families and relatives of Ali's deceased coworker. Ali decided to call 3 families. Then each family calls 3 other families, and so on. How many families will be notified during the fourth round of calls?
Gabotlhano go feta sete sa ga James sa dibapadise, se se nang le dibapadise di le 80, ke 5*80 = <<5*80=400>>400 dibapadise.
Fa Jonathan a ne a hutsafetse go utlwa gore o tlhoka dibapadise tse 2 go feta tse a nang natso, o ne a na le 400-2 = <<400-2=398>>398 dibapadise
#### 398

In the first round, there are 3 families called.
In the second round, there are 3 x 3 = <<3*3=9>>9 families called.
In the third round, there are 9 x 3 = <<9*3=27>>27 families called.
In the fourth round, there are 27 x 3 = <<27*3=81>>81 families called.
#### 81