Three.
If you were to have a number like 0.00050, every zero before a number of 1 or higher is not considered a significant number, meaning the example here would have only two significant numbers.
Five numbers.
The figure 18.03 has a total of four significant numbers
5 significant figures.
4 significant figures.
5 significant figures.
Five numbers.
231.57 has five significant figures/numbers. All the numbers in 231.57 are significant.
factors of 540 are 1,2,3,4,5,6,9,10,12,15,18,20,27,30,36,45,54,60,90,108,135,180,270,540
540
All multiples of 540, which is an infinite number.
The figure 18.03 has a total of four significant numbers
540
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).
3 significant figures.
It has five significant figures.
7 significant figures.