Question

14
4
A and B are two sets. A has 10 members and
B has 18 members. AUB= 20. The number of
members in A B will be​

Answer 1

Answer:

4

A and B are two sets. A has 10 members and

B has 18 members. AUB= 20. The number of

members in A B will be

Answer 2

Answer:

Set A has 7 elements & set B has 8 elements.

Minimum A∪B elements condition: Out of 8 elements of set B, 7 elements are identical to that of set A. In this case A∪B=B & it will have 8 elements.

Maximum A∪B elements condition: A & B are disjoint sets, that no element will be common to them. Then:

n(A∪B)=n(A)+n(B).

A∪B has 15 elements.

Step-by-step explanation:

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