(a) How many significant figures are in the numbers 99 and 100?
(b) If the uncertainty in each number is 1, what is the percent uncertainty in each?
(c) Which is a more meaningful way to express the accuracy of these two numbers, significant figures or percent uncertainties?
99 has 2 significant figures
100 has 3 significant figures
Based on the results of parts a and b, the percent uncertainties are more meaningful.