Which one is NOT divisible by 9 234 345 or 567?

For each given number, add the digits. If the sum comes to nine, then it is divisible by '9'.

234 ; 2 + 3 + 4 = 9 So is dividble by '9'

345 ; 3 + 4 + 5 = 12 = 1 + 2 = 3 Not divisible by '9'

567 ; 5 + 6 + 7 = 18 = 1 + 8 = 9 so is divisible by '9'.