Integers ending in 0 are always ambiguous. It is not possible to tell whether this number is accurate to the nearest thousands (2 significant figures) or to the nearest integer (5 significant figures).
4
7.107 has four significant figures.
There are five.
There are three significant figures: the trailing zeros are significant because they are indicative of the precision of the number.
Because 10.00400 is 10.004, this has five significant digits (numbers).
There are two significant figures in the number 45000.
It is an ambiguous question. The answer is 2, 3, 4 or 5. If counting in thousands: 43000, 44000, 45000 then 2 at the other extreme, if counting in units: 44998, 44999, 45000 then 5.
2 of them.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
45000 ÷ 100 = 450
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
4
4
Four
5.
There are 5 significant figures (number) in 0.00909.
7.405 has four significant figures.