You must satisfy all the mathematics requirements for your major; however, some higher-level courses may satisfy lower level requirements. Specifically, MTH191, MTH230, MTH240, MTH242, and MTH340 will satisfy requirements for the sequence MTH181/183 or the sequence MTH123/125. (Please note that in the MTH181 and MTH183 sequence, neither course may substitute for the other. The same is true for the MTH123/125 sequence.)
NOTE: MTH181 or MTH183 will satisfy either MTH123 or MTH125 in a 3-credit for 3-credit exchange. MTH181 will not satisfy both MTH123 and MTH125. Only MTH191, 230, 240, 242 and 340 would satisfy the sequence of both MTH123 and MTH125 or both MTH181 and MTH183. MTH181 can only substitute for either MTH123 or MTH125, but not both. Likewise, MTH183 can only substitute for either MTH123 or MTH125, but not both.
If your placement allows you to take a higher-level course, you may save time and money by taking one higher-level course as a substitute for lower-level courses. A higher-level course may also give you an advantage should you ever wish to transfer or to earn a higher degree. Talk to your advisor and contact the Mathematics Department for advice.