A universal set U consists of elements. If sets​ A, B, and C are proper subsets of U and ​n(U)​, ​n(A ​B)​n(A ​C)​n(B ​C)​, ​n(A B ​C)​, and​ n(A B ​C)​, determine each of the following. a. n(AUB)
b. n(A'UC)
c. n(AnB)'

Step-by-step explanation:

Given

Required

Solve a, b and c

There are several ways to solve this; the best is by using Venn diagram (see attachment for diagram)

Solving (a):

This is calculated as:

From the attachment

So:

Solving (b):

This is calculated as:

From the attachment

So:

Solving (c):

This is calculated as:

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

step-by-step explanation: