Three
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.
All four of the digits given are significant digits.
5 of them.
4
It has two significant digits.
It has 3 significant digits.
3 significant digits.
Five. All nonzero digits are significant and zeros in between significant digits are 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.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
50.4 has 3 significant digits.
There are 4 significant digits in 5600.
This number has seven significant digits.