The fact that there is a trailing zero and the number is not given as 970 is indicative that the number is accurate to the nearest tenths. Therefore, it has four significant figures.
4
It has 3 significant digits.
It has two significant digits.
It has 6 significant digits.
How many significant digits does the following operation have(40,200.0 * 0.000240) - 2.778
4
It has 3 significant digits.
3 significant digits.
It has two 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.
Three significant digits.
50.4 has 3 significant digits.
There are 3 significant digits in 20.0
3.12724 has 6 significant digits.