The ACT can be very confusing. This series will help you unravel the math portion of the test. This video helps you understand a problem remainders and how to find the 330th digit of a repeating decimal. This trick is used for finding the value of "i" (imaginary number) to any power as well. It will also be divided by 4 to find the remainder. I have seen it used to find a date 200 days ago as well. It is important to recognize the different types of remainder problems as it is a favorite of the ACT.