Question

Select the set-builder notation for this set:

{18,19,20,...}

Answer 1

Again I Still Dont understand These problems Here.

Answer 2

Looking at these options, n is a whole number in each of them.

For the given set in the roster method {18,19,20,...}, is each of 18, 19, 20, 21, 22, .... a whole number? Yes or No? @SJOJ4552

Answer 3

Yes I Think So ?

Answer 4

Yes, they are. The Whole Numbers are 0 and the positive integers.

Okay, let's look at the options.

We know whole number goes with all options so we need to look at how the numbers are described.

Answer 5

It comes down to this:

which one of these means the same as {18,19,20,...} ?

Answer 6

Is is n ≤ 18 ? Yes or No?

Answer 7

With that option, the biggest number you could have in the set would be 18. The others would have to be smaller.

Answer 8

So Would it be greater Than ? And I Cant Delete it, Its a Test

Answer 9

Do you have an idea of what the answer is? If so, I will check it.

Answer 10

If not, I will continue asking questions until you get the answer.

Answer 11

I Think it would be... C ?

Answer 12

n < 18 would be 17, 16, 15, 14, ....
That does not look right to me.
Our set goes {18,19,20,...}

Look at the other options.

Answer 13

Remember that it is true to say 18≥18 because that means in words that 18 is greater than OR equal to 18.

Answer 14

So if the set goes {18,19,20} It would be D ?

Answer 15

D) is n >18 and would be {19, 20, 21, 22, ...}

Option D does not include 18 so option D is wrong.

Answer 16

That leaves options A and B. Remember, the numbers are getting larger.

Answer 17

So the answer would be Letter B !

Answer 18

I just saw that you are new to OpenStudy. Welcome.

Answer 19

Yes i am, The School Blocks open study so this is the only time I Can use it to get help!

Answer 20

And Yes the answer was Correct!