( 1): 1/K+2/K+3+4/K/K = 1
Therefore: C = 10.
( 1/2)& lt; Only 1 or 2.
(3)1≤ x ≤ 3p =1102/10 = 0.3 Therefore, in the middle, x = 1, 2,3.
(4)= 3,4
P value = 3/104/10 = 7/10,