Just one. The trailing zeros are not significant.
* * * * *
Not true.
Integers with trailing 0s are ambiguous. You cannot differentiate between 500o as a number rounded to
the nearest thousand (1 significant digit), or
the nearest hundred (2 sig digits), or
the nearest ten (3 sig digits) or
the nearest unit (4 sig digits).
69
3 significant digits because first zeros are just placeholders
Three. All nonzero digits are significant and zeros in between significant digits are always significant.
3
Two. All nonzero digits are significant.
There are 4 significant figures in 6.741.
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.
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.
Three significant digits.
There are 3 significant digits in 20.0