No, it has 5. The 0 at the end is not a place holder and so is (or should be) an indicator of the precision of the number. In that case it is also a significant figure.
302.5
That one has five.
241.9956 rounded to four significant figures is 242.0
Four significant figures.
The answer is 0.059 as the four significant figures are 0,0,5,9.
It has four significant figures.
10.34
302.5
That one has five.
There are four significant figures in 0.1111.
There are four significant figures in .007001
Four of them.
The number 3,072 has 4 significant figures.
100,3 has four significant figures.
It has four significant figures
Four significant figures.
4,500 has two significant figures.