Two of them
Two of them.
Four
3 of them.
Just the one and it is 4
There are four significant figures in 0.1050
Two
Two of them.
2 of them.
Two - the trailing zeros are not significant.
The number 85000 has two significant digits. The trailing zeros are not considered significant unless there is a decimal point indicated (e.g., 85000. has five significant digits). Therefore, without a decimal point, only the digits '8' and '5' are counted as significant.
None of the zeros in that number are significant.
There are two significant figures in 85000
There are four significant digits in the number 1.071.
Three significant digits.
This number has seven significant digits.
All four of the digits given are significant digits.
There are two significant digits in the number 83.