In the Choui, the way of worldly change is presented with symbols of Yin and Yang, but the actual situations are discussed with the phase of Gue Hyo (卦爻). And, the operation to determine the phase of Gue Hyo is made by the number. So, the phase number of Gue Hyo and the way order always go along. When we call theoperation that reveals the future world with the specific phase of Gue Hyo as the Jeom (Prediction) of Choui, the (...) Jeom is operated with the number. At this time, the operation method of the number is called Seobeop. In this paper, by examining the Seobeop in the book of Hongbeomhwangeuk (洪範皇極) along with that in Choui, the numerological research will be carried out about the coincidence and difference between the Samjaeron (Three element theory) in theCheonbugeong and the Yin-Yang theory of Choui in the Seobeop. (shrink)