There a four significant figures in the number 16.82, the last '2' determines the best precision available.
7
It has no precision, since there is no following number.
7
The one farthest to the right of the decimal point (3).
Unless told otherwise we would assume that the last (furthest to the right) digit of a number determines its precision. The last digit here is a "1", which is in the tenths column, and so this number is precise to the nearest tenth. However, unless told otherwise by using the recognised terminology, we would normally also assume that this number is absolutely precise as there is no indication it has been rounded.
In this case with 234.896 the last digit, '6' determines the precision since in is the last non-zero digit.
7
It has no precision, since there is no following number.
3
7
The precision is determined by the POSITION of the number 6 - NOT its value.
The last digit, 2.
2
The "2".
4
3
In the number 10.846, the digit that determines its precision is the last digit, which is 6. This is because precision refers to the level of detail in a measurement, and the last significant digit indicates the smallest unit of measurement being reported. Therefore, the presence of the digit 6 suggests that the value is precise to the thousandths place.