To round 1 3/4 to the nearest whole number, we first need to look at the fractional part, which is 3/4.
When rounding, if the fractional part is 0.5 or higher, we round up. Since 3/4 is equivalent to 0.75, which is greater than 0.5, we will round up from 1 to 2.
Therefore, 1 3/4 rounded to the nearest whole number is 2.