Question

Let A = {1, 3, 5, 7} B = {5, 6, 7, 8} C = {5, 8} D = {2, 5, 8} U = {1, 2, 3, 4, 5, 6, 7, 8}. Determine whether the statement is true or false. C A

Answer 1

what statement?

Answer 2

if C c A

Answer 3

C subset of A
means every element of C must be in A
is all the elements of C in A?

Answer 4

yes @ freckels i have no idea how to solve

Answer 5

is there a number in C that is not in A?

Answer 6

8 is not in A

Answer 7

then its not a subset

Answer 8

gracias to both you guys rock!

Answer 9

so doesn't that mean all the elements of C is not in A @94druiz
for C to be a subset of A
all the elements in C must be in A
for example
Let X={2,4,6,8} and Y={1,2,3,4,5,6,7,8,9}
X is a subset of Y
because all the elements that belong to X are in Y

Answer 10

But Y is not a subset of X
because all the elements in Y are not in X
that is for example 1 is in Y but not in X

Answer 11

Let U = {q, r, s, t, u, v, w, x, y, z}

A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}

List the elements in the set C' U A'
What about when the symbols change?

Answer 12

C' are the elements that are not in C and are in the universe

Answer 13

A' are the elements that are not in A and are in the universe

Answer 14

can you find C'?

Answer 15

v,w,x,y,z?

Answer 16

C={v,w,x,y,z}
we are looking for not C

Answer 17

Those are the elements that are not in C but anywhere else

Answer 18

im lost now

Answer 19

\[U=\left\{ q,r,s,t,u,v,w,x,y,z \right\}\]
which of these elements are not in C?

Answer 20

q,r,s,t,u

Answer 21

so that is not C