Ans: B
Note that the rounding method is rounding down. That means the value less than $1$ will be truncated to the nearest integer. Therefore, $345\le x < 346$.
Resources for HKDSE Mathematics
Resources for HKDSE Mathematics
Note that the rounding method is rounding down. That means the value less than $1$ will be truncated to the nearest integer. Therefore, $345\le x < 346$.
