Question

Alexandra is a blind widow (spouse died five years ago) who provides a home for her 18-year-old nephew, newt (newt is alexandra's brother's son). newt's parents are dead, and so newt supports himself. newt's gross income is $5,000.

Answer 1

In this case, alexandra would be considered as Single with one personal exemption

Since her brother's gone, Alexandra would automatically chosen as guardian since Newt's any other relatives already passed away. Because of this, Newt could be used as Alexandra's one personal exemption, as if newt is her legal child.