Chapter 2.2, Problem 2.21PP

Identify each of the following as measured or exact and give the number of significant figures (SFs) in each measured number:
a. The mass of a neonate is 1.607 kg.
b. The Daily Value (DV) for iodine for an infant is 130 mcg.
c. There are $\text{4}.0\text{2}\times \text{1}{0}^{\text{6}}$ red blood cells in a blood sample.
d. In November, 23 babies were born in a hospital.