There are three.
There are three of them there.
0.00860 has three significant figures.
There are three significant figures in the number 102.
635 is already a three significant figure number.
only three million
Three.
Three.
Three
Yes it is.
That depends on whether the dot before the question mark is a period or a decimal point. 100 has one significant figure. 100. has three significant figures.
It is 25.7 when rounded to 3 significant figures