Q 71. You are given four images represented as

I1=          0      0 
                 0.     0

I2=          0      1 
                 0      0

I3=           0      1 
                1       0

I4= 1      1

      1        0

The value of entropy is maximum for image

(A) I1

(B) I2

(C) I3

(D) I4

Answer C.
Let we have two classes, class 0 and class 1.
In I1 all entry are in class 0. None in class 1.
In I 2 , 3 entry are in class 0 . 1 entry in class 1.
In I3, 2 entry in each class.
In I4,  1 entry in class 0 and 3 in class 1.
In I3. Entry are most separated in each class.  hence max entropy.