When someone is paid biweekly, this means that they are paid twice a week.
So, to figure out how many paychecks they get, we'll need to find out how many weeks there are in a year.
A year is 365 day & there are 7 days per week. 365 divided by 7 is about 52 weeks.
If you're being paid twice a week & there are 52 weeks in a year, then multiply 52 by 2 and you'll have your answer.
Hope that helps!