View full size image. How long a healthy pregnancy lasts can vary by as much as five weeks, even when doctors precisely determined the date of conception, a new study suggests.
Exemptions for dependents. You can usually claim an exemption for each of your dependents. A dependent is either your child or a relative who meets a set of tests. You can't claim your spouse as a dependent. You must list the Social Security number of each dependent you claim on your tax return.
An exemption might be possible for those who work temporarily during their summer break or just part-time throughout the school year. The total number of allowances youâre claiming as a student would ideally be zero if your parents can still claim you as a dependent on their taxes and you donât work.