How many significant figures does 3.008 have?

Answer 1

One - all nonzero digits are significant.

Yes, but embeded 0s are also counted. 102 has 3 sig digs.

Secondly, trailing 0s (0s on the right hand side of the number) are significant if they are an indication of the degree of accuracy, but not otherwise.

Answer 2

It has one significant figure.

Answer 3

Mathematically, just 1.

Answer 4

FOUR

Answer 5

1 of them.