Q29,Paper 3,D13. The height h(A) of a fuzzy set A is defined as

h(A) = sup A(x)

                x∈A

Then the fuzzy set A is called normal when

(A) h(A) = 0 

(B) h(A) < 0

(C) h(A) = 1 

(D) h(A) < 1

Answer C.

Explanation.

As definition there is an element x where membership is 1 Is called height of fuzzy set A.