2. Flip 8 fair coins. The probability of having n Heads is p and the probability of having n+1 Heads is q. 0<= n <= 7. Is p > q?
1. n => 3
2. n <= 5
反正我现在还没思路。。。
3. a(一个分数)和b(一个分数)的距离的8/3 is the same as c(一个分数)和b(一个分数)的距离
具体数字不记得了,题目写得很拗口,我花了1分钟理解(错),4分钟做题,最后还是没凑出来答案。。。T.T
遇到这题的小伙伴祝好运。。