Question

is [7,10) a subset of {7,8,9,10}

Answer 1

yes because 7 and 10 are present in main set also..

Answer 2

well for some odd reason its false

Answer 3

and i cant figure out y its false

Answer 4

Are you sure about the brackets?

Answer 5

")" in {7,10)

Answer 6

yaaa

Answer 7

There is the trick. ')'

Answer 8

well it doesnt include 10 but then it shld still be a subset

Answer 9

[7,10) is an interval of numbers...it includes numbers like 8.4533533453

Answer 10

7 is including here and 10 is not ..

It is about the brackets..

Answer 11

Since [7, 10) is an interval of real numbers, it containers infinately many real numbers as @Zarkon says, so it can't be a subset of the set you are suggesting.

Answer 12

AWEESSSOOMMMEEEEEE

Answer 13

so wait

Answer 14

can u explain the difference btwn (5,8) and [5,8]?

Answer 15

Like my book doesnt explain the difference btwn the diff kinds of brackets

Answer 16

\[(5,9)=\{x\in \mathbb{R}|5<x<9\}\]

\[[5,9]=\{x\in \mathbb{R}|5\le x\le9\}\]

Answer 17

ok what abt (5,9] and [5,9)

Answer 18

Well, (5,8) is an interval which doesn't include 5 nor 8, but [5,8] is the same interval which includes 5 and 8.