4 significant figures.
The figure 18.03 has a total of four significant numbers
There are 5 significant figures.
3 significant figures.
5 significant figures.
2 significant figures.
H&A made many firearms. Your description is to vague.
231.57 has five significant figures/numbers. All the numbers in 231.57 are significant.
The figure 18.03 has a total of four significant numbers
Three. All nonzero numbers are significant, and any zeros in between significant numbers are significant.
Because 10.00400 is 10.004, this has five significant digits (numbers).
There are 5 significant figures.
It has 4 significant figures
Four significant figures.
Three significant figures.
5 significant figures.
Four significant figures.
1 significant figure.