Question

For exercise 88 and 92, let
U = {x | x ∈ N and x < 10}
A = {x | x ∈ N and x is odd and x < 10}
B ={x | x ∈ N and x is even and x < 10}
C = {x | x ∈ N and x < 6}

Determine the following:
88. (B ⋃ C)’ (4 pts.)


92. (A ⋃ C) ∩ B (4 pts.)

Answer 1

88. List the elements in B and C .
Then you will find B U C

Then compare with the elements in U.

B = {2,4,6,8}

Answer 2

what is C?

Answer 3

C = {x | x ∈ N and x < 6}

Answer 4

right Now write it as a list of elements
I guess you know that N = set of natural numbers?

Answer 5

yes but what is a list of elements?

Answer 6

listing the elements in the set

C is theset natural numbers which fit the condition given ( those numbers < 6)

Answer 7

C = { 1,2,3,4,5}

Answer 8

C = {x | x ∈ N and x < 6}

means ' the set C consisting of values of x whose elements are natural numbers and are less than 6'

Answer 9

∈ means 'is an element of'

Answer 10

understand?

Answer 11

ah okay i do

Answer 12

what would this be? (A ⋃ C) ∩ B

Answer 13

lwrite the set A as a list of elements
then list union of A and C
the required set is the intersection of this set and set B.

Answer 14

what would the union of A and C be?

Answer 15

hello?

Answer 16

What do you get for A?

Answer 17

Lets do a simple example
if set A = {1,2,3} and set B = { 1 , 5, 6}

set ( A U B) = {1,2,3,5,6}

Answer 18

i dont understand what i should get for A.

Answer 19

make sure for #88 you write the complement

Answer 20

whats a compliment ?