67
23 :]
If the digit sum of a number adds up to 9 then it is divisible by 9.
999
204
No. The only digit of 2 is ' 2 '. It adds up to 2.
Assuming that "adds up to" means "its digits add up to" 888
It's a four digit number, 2345
You line up the last numbers and then add it!
Rounding up implies the number is smaller than 1000. However, a number smaller than 1000 cannot be a 4-digit number. So there cannot be such a number. What was said is wrong. The greatest 4 digit number that rounds up is 999.9
It can have up to 5 digits.
199 and 11