Skip over navigation
Is it true that $ 99^n $ has $ 2n $ digits and $ 999^n $ has $ 3n $ digits? Investigate!
Rachel's Problem
Age 14 to 16
Challenge Level 
Is it true that $ 99^n $ has $ 2n $ digits and $ 999^n $ has $ 3n $ digits? Investigate!
(This problem was inspired by Rachel Galley's work on the problem called Giants in the June 1999 Six.)
You may also like
Pros and Cons
If p is a positive integer and q is a negative integer, which of these expressions is the greatest?
