Assigning Appropriate Significant Figures
The state of Colorado is listed in a road atlas as having a population of 4,301,261 and an area of 104,091 square miles. Do the numbers of significant figures in these two quantities seem reasonable? If not, what seems to be wrong with them?
Which of the following numbers in your personal life are exact numbers?
(a) Your cell phone number, (b) your weight, (c) your IQ, (d) your driver's license number, (e) the distance you walked yesterday.