3 about disjoint subsets A and B of a universal set U, except assume that n(U)=100, n(A)=30, and n(B)=50. Then n(A′∪B)=

Q: Which of the following are true for all sets A, B, and C. If the statement is true, prove it by…

A: (d) Let, x ∈ (A')'       => x ∉ A'       => x ∈ A      So, (A')' ⊆ A. . . . . . (I)…

Q: Suppose V is a set and that n(V) = 10. How many subsets of V contain exactly 3 members?

A: Number of ways in which 3 elements of V can be clubbed to form a subset = 10C3…

Q: 1. Let A, B abd C be sets. Prove that Au (B-C) = (AUB) - (C-A).

A:

Q: Let A, B, and C be subsets of a universal set U and suppose n(U)= 150, n(A) = 22, n(B) = 24, n(C) =…

A:

Q: (b) Let = {A; : i EN} be an indexed family of sets with the property that A₁ A₂ 22 A, 2..., that is,…

A:

Q: [Falkner Section 11 Exercise 15(b) – modified] Let S and T be sets. Prove that S and T are disjoint…

A:

Q: A and B be subsets of a universal set U and suppose n(U) = 400, n(A) = 200, n(B) = 160, and n(A N B)…

A:

Q: Suppose we take our universe to be the set U = { 1, 2, 3, 4, 5, . . . , 20 }, and set A = { x | x ∈…

A:

Q: 4. (a) Write down four distinct elements of the set {2 €C:2- E = 2i}.

A: Note:  We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: Let U be the universal set with disjoint subsets A and​ B, where n(U) = 37​, n(A) = 8​, and n(B) =…

A: first we will find the value of n(A'∩B') we know according to De Morgan's law  A'∩B' =…

Q: 1. Let A = {−30, -10, 10, 30, 50} and B = {-20, -10,0, 10} be subsets of the universal set ε = {10x:…

A:

Q: 28 Let A, B and C be subsets of a universal set U with CCANB. Suppose n(U) = 50, n(A) = n(B) = 25,…

A: Option f) is correct. Answer =7

Q: Let A, B, and C be subsets of a universal set U and suppose n(U) = 150, n(A) = 27, n(B) = 29, n(C) =…

A: A set is the mathematical model for a collection of different things; a set contains elements or…

Q: Let A and B be subsets of U, n(U)=90, n(A’∩B’)=20, and n(A–B)=n(B–A)=30. Determinen(A∩B).

A: It is given that A and B be subsets of U.

Set Theory

Every field in the present world involves a set. The theory of sets was developed by German mathematician Georg Cantor while working on the “problems of trigonometric series”.