Question

i will give a medal

How many subsets does the set {1, 2, 3} have?


6
7
8

Answer 1

8 subsets

{1}
{2}
{3}
{1, 2}
{1, 3}
{2, 3}
{1, 2, 3}
{ }

Answer 2

^^ wat he said

Answer 3

Use set builder notation to represent the following set.

{... -3, -2, -1, 0}


{x | x z, x ≤ 0}
{x | x N, x ≤ 0}
{x | x R, x ≤ 0}

Answer 4

what bout this

Answer 5

do u know wat the builder notation is?

Answer 6

no

Answer 7

go look at this and then come back http://www.mathsisfun.com/sets/set-builder-notation.html

Answer 8

Set builder notation is used in mathematics as a "shorthand" way to write a set. First, the words "such that" are replaced by a vertical bar. We can write S = {x such that x is an integer less than zero} as S = {x | x is an integer less than zero.}

To make the description even shorter, letters are used to represent some subsets of the real numbers:

N = the natural numbers; {1, 2, 3, 4, ...}
Z = the integers; {... -2, -1, 0, 1, 2, ...}
Q = the rational numbers; numbers that can be written in fraction form, a/b, where b ≠ 0
R = the real numbers

Answer 9

is this right

Answer 10

something like that

Answer 11

Use set builder notation to represent the following set.

{... -3, -2, -1, 0}


{x | x z, x ≤ 0}
{x | x N, x ≤ 0}
{x | x R, x ≤ 0}



so whats the answer

Answer 12

idk u tell me then i will tell u if ur right thats the only way to learn

Answer 13

There are 3 members of the set. 2^3 is 8 so there are 8 subsets.

Answer 14

^^^ What she said

Answer 15

#1 random

Answer 16

Yes