Novriil
Member
Hi!
I have this problematic exercise:
Prove with mathematical induction that the sum of three consecutive natural numbers that are in ^3 can be divided by 9.
I got so far:
n^3 + (n+1)^3 + (n+2)^3 =
I guess it has something to do with times 9 in the sum but I'm not sure.
I have this problematic exercise:
Prove with mathematical induction that the sum of three consecutive natural numbers that are in ^3 can be divided by 9.
I got so far:
n^3 + (n+1)^3 + (n+2)^3 =
I guess it has something to do with times 9 in the sum but I'm not sure.