A Master's degree in mathematics can allow for pursuing a second Master's in computer science without a prior bachelor's in the field, depending on the specific school's admission criteria. Having completed relevant computer science courses during the undergraduate program can strengthen the application. It is essential to review the computer science department's website for specific admission requirements and to consult with a registrar for clarification on any questions. Generally, a graduate program does not require a specific undergraduate degree but does necessitate demonstrated competency in the subject area. Ultimately, the ability to gain admission will depend on meeting the individual department's prerequisites.