xinyu04

摘要： You choose one of two identical looking bags at random. One bag has three black marbles and one white marble. The other has three white marbles and on 阅读全文

摘要： A jar begins with one amoeba. Every minute, every amoeba turns into 0, 1, 2, or 3 amoebae with probability 25% for each case ( dies, does nothing, spl 阅读全文

摘要： You have nine pearls, eight are real and one is fake. All the real ones weigh the same and the fake weighs less than the real ones. Using a balance sc 阅读全文

摘要： You are controlling a robot that is located somewhere in a room. The room is modeled as an m x n binary grid where 0 represents a wall and 1 represent 阅读全文

摘要： Using a balance scale and four weights you must be able to balance any integer load from $1$ to $40$. How much should each of the four weights weigh? 阅读全文