Sample significant figure problems:

b) 0.0606

Answer

To determine the number of significant figures in this number we must apply rule #1, #2 and #3...

1. All nonzero digits are significant.

2. Zeros between nonzero digits are significant

3. Zeros that precede the first nonzero digit are not significant. Reading from left to right begin counting with the first nonzero digit.

Therefore this number has 3 significant figures (sig figs).