Two significant figures.
There are two. The two leading 0's re not significant figures.
2 of them.
2 of them.
There are 4 significant figures in this measurement.
There are 3 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 3 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 3 significant figures in this measurement.
There are 5 significant figures in this measurement.