∴ The probability of drawing the number 3 is C23P2( 1? p)= 3× 14× 12 = 38；
(2) All possible values of the random variable X are 1, 2,3, then
p(X = 1)= c33c 36 = 120； p(X = 2)= c 12c 23+c22c 13c 36 = 920； P(X=3)=C25C36= 1020
The ∴ distribution list of random variable x is:
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