What is the prime factor of 21!

Select all the expressions that will include a remainder.

Consider the first four terms of the sequence below. what is the 8th term of this sequence?

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921