Indicate the number of significant figures in each number. If the number is an exact number, indicate an unlimited number of significant figures….

Indicate the number of significant figures in each number. If the
number is an exact number, indicate an unlimited number of
significant figures.
a. 305,435,087 (2008 U.S. population)
b. 2.54 cm = 1 in
c. 11.4 g>cm3 (density of lead)
d. 12 = 1 dozen