quot;每次 quot;五星机率5.6%四星机率36%三星机率58.4%30抽只中保底的机率是(1-5.6%)^29=18.8%60抽只中保底的机率18.8%^2=3.5%90抽只中保底的机率18.8%^3=0.66%120抽只中保底的机率18.8%^3=0.12% 的算法是30抽只中保底的机率是1/30=3.3%60抽只中保底的机率2/60=3.3%90抽只中保底的机率3/90=3.3%120抽只中保底的机率4/120=3.3%我是觉得 机率公布不实拉