The product of any three consecutive natural numbers is divisible by 9.prove or find a counterexample can anyone give me feedback on my solution
false counterexample:
n(n+1)(n+2)
let n= 1
1(2)(3)
=6 is not divisible by 9

is this correct?
Indeed, $1\cdot2\cdot3=6$ is not divisible by $9$, so your counterexample works perfectly well.
Indeed, $1\cdot2\cdot3=6$ is not divisible by $9$, so your counterexample works perfectly well.