3 significant figures.
231.57 has five significant figures/numbers. All the numbers in 231.57 are significant.
1, 2, 83, 166.
140 + 20 + 6 = 166.
The figure 18.03 has a total of four significant numbers
There are 2.54 cm per inch and 12 inches per foot. Therefore, in 166 cm there are 166/(12 X 2.54) = 5.45 feet, to the justified number of significant digits.
Three. All nonzero numbers are significant, and any zeros in between significant numbers are significant.
166
Because 10.00400 is 10.004, this has five significant digits (numbers).
It has five significant figures.
7 significant figures.
3 significant figures.
There are 5 significant figures.