Question

The sets A and B have 6 and 9 elements
respectively, A is a proper subset to B then
n(ANB) =
A. 15
B. 9
C. 6
D. 3​

Answer 1

Answer:

6

Step-by-step explanation:

If all the elements of set A are different than set B.

Then the maximum no. of elements in set A∪B will be 6+3=9.

If however, Set A is a subset of B, then the total number of elements in set A∪B will be n(B)=6.