1 of them.
One and it is 7
There is only one significant figure which is the 7. When zeros are placed before a number, they are not considered significant figures.
One. The zeros to the left are only position placeholders; they are not significant digits.
Two significant figures.
Leading zeros are not significant digits, therefore 007 has one.
Two of them and they are 1 and 8
4 significant figures.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
There are 3 significant figures in 94.2.
Oh, dude, like, there are, like, six significant figures in 6.0025. It's like, the 6, the 0, the 0, the 2, and the 5, all hanging out together, being significant and stuff. So, yeah, six figures, man.
3 significant figures.
4 significant figures.