6, because there is a 1 in front of the decimal so every number after the decimal is also a significant figure.
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).
Two significant figures.
3 significant figures.
There are 5 significant figures.
There are 5 significant figures.
3 significant figures.
3 significant figures.
One significant figure.
3 significant figures.