No. 3. The trailing 0 (the one at the end) is significant because it is an indication of the precision of the number.
No, 3 of them.
3 significant figures... the 404
This pair does not have the same or the same number of significant figures.
42 has two significant figures.
Rounded to two significant figures it becomes 1.0e4
Rounded to two significant figures it becomes 3.6
No, three significant figures.
Two significant figures.
3 significant figures... the 404
Yes.
This pair does not have the same or the same number of significant figures.
There are two significant figures which are the two 2s.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
22.1 to two significant figures = 22
23.81558 to two significant figures is 24.
42 has two significant figures.
Two significant figures.
Two significant figures.