A shopping mall designed a lottery model for promotion. A certain amount of money can get a lottery ticket, and each lottery ticket can be packed in a container of the same size.

The probability distribution list of (1) (2)X is as follows

X

10

20

P

0.04

0.32

0.64

(1) Let "winning the lottery at one time" be event A, then P (a) = =.

Answer: The probability of winning the lottery is.

(2)X can be 0,10,20,

P(X=0)=(0.2) 2 =0.04，P(X= 10)= ×0.8×0.2=0.32，P(X=20)=(0.8) 2 =0.64。

The probability distribution list of x is

X

10

20

P

0.04

0.32

0.64