Question

True or false:
This symbol means every element is in both sets. (A ⊆ B)

Answer 1

@bohotness

Answer 2

@LichKing

Answer 3

@PJtheVet

Answer 4

@demonchild99

Answer 5

@sleepyjess

Answer 6

@ganeshie8

Answer 7

@Hero

Answer 8

I hope this helps, I am horrible at unions and intersections, http://prntscr.com/5t2d2o
From: http://en.wikipedia.org/wiki/List_of_mathematical_symbols

Answer 9

Thank you!

Answer 10

Wait for ganesh's response though, I'm sure it will be awesome :)

Answer 11

\(A \subseteq B \) means every element of A is in B

but there can be some other elements in B that are not part of A

Answer 12

@ganeshie8 Would you mind helping me with something else, please?

Answer 13

wil try, ask..

Answer 14

A = {1, 3, 5, 7, 9}
B = {2, 4, 6, 8, 10}
C = {1, 5, 6, 7, 9}
A ∪ (B ∩ C) =



{1, 5, 7, 9}

{1, 3, 5, 6, 7, 9}

{1, 5, 6, 7, 9}

Answer 15

\(B \cap C\) is the set with elements common to both B and C

Answer 16

start by finding that ^

Answer 17

look at the sets B and C
are there any common elements ?

Answer 18

It would be 1, 2, 4, 5, 6, 7, 8, 9, and 10

Answer 19

not quite

Answer 20

only take the elements that exist in both set A and set B

Answer 21

But you said to find the elements in B and C

Answer 22

find the "common" elements in B and C

Answer 23

6?

Answer 24

Yes! only that

\(B\cap C = \{6\}\)

Answer 25

union that wid set A

Answer 26

Okay, but what about the other part? I don't understand unions and intersections when parentheses get involved. Lol

Answer 27

A = {1, 3, 5, 7, 9}

\(B\cap C = \{6\}\)

Answer 28

union of two sets is just another set with elements that exist in either one of the sets


simply take all the elements for union

Answer 29

Would it be 1, 3, 5, 6, 7, 9?

Answer 30

Yes!

Answer 31

Okay, thank you so much! I still don't quite understand it that well, though.