Stacy noticed that the casino "Trap" uses an unusual dice: not all faces have the same probability of falling out. Stacy was able to establish that the probability of an even number falling out is ; the probability of a number divisible by falling out is ; the probability of a or falling out is ; the probability of a power of two (including zero power) falling out is ; the probability of a square of some number falling out is .
Calculate the mathematical expectation of the points obtained from one roll of such a strange dice.
Tip: First, calculate the probability of each of the numbers from to falling out.