There are three sig fig in 0.00567.
The first significant figure is the first non-zero digit; count all the digits from there ontwards until the last non-zero digit is reached.
Four significant digits in 50.00.
Five. All nonzero digits are significant and zeros in between significant digits are significant.
Three significant digits.
There are five significant digits.
This number has seven significant digits.
Four significant digits in 50.00.
4
Five. All nonzero digits are significant and zeros in between significant digits are significant.
It has two significant digits.
3 significant digits.
It has 3 significant digits.
4 significant digits.
Some persons consider as significant digits only 3 and 9; I think that is more correct to consider as significant digits 3,9,0,0,0. Other propose to add bars or points (as 39000.) for distinction but this system is not practically used.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
000203 has 3 significant digits.