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.
No, 5 of them.
302.5
That one has five.
241.9956 rounded to four significant figures is 242.0
Four significant figures.
There are four significant figures in the number 0.006709.
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.
Four significant figures.
It has four significant figures
100,3 has four significant figures.
0.00431209461 with four significant figures is 0.004312
241.9956 rounded to four significant figures is 242.0