(1) As in the title, all tails are as high as 1/24, and the probability of each uniform coin facing up is 0.5.

Let the probability of the reverse side facing up be p, then 0.5 4× p = 1/24. P=2/3

So the probability of facing up is 1-2/3= 1/3.

(2)x=0 is Ex= 1/24.

X= 1 equals Ex=9/48.

X=2 is Ex= 1/3.

X=3 equals Ex=7/24.

X=4 equals Ex=3/24.

X=5 is Ex= 1/48.