Question

At Russell's school, one person will contact 4 people and each of those people will contact 4 other people, and so on. How many people will be contacted in the fifth round?

Answer 1

First round = 4 people will be contacted.
Second round = 4^2 (each person will contact four other people).
Third round = 4^3
Forth Round = 4^4
Fifth Round = 4^5 = 1024.

Answer 2

thx :)