Question

Which of the following sets is equal to {1, 2, 3, ...}?


{x | x E R, x > 1}
{x | x E R, x ≥ 1}
{x | x E N, x ≥ 1}

either b or c im not shure tho

Answer 1

c

Answer 2

real numbers include negative, zero and positive numbers.

Answer 3

First of all, they are integers, more specifically natural numbers. Second, it includes 1 as well, so it should have 'N' and 'Greater than or equal to 1'.

=> Option three.

Answer 4

You should be able to figure this out by looking at the choices.

The first choice says x > 1
Would that include the first element of the set ?

The second choice says "from the set of Reals"
Does the set of Reals include only integers ?

Answer 5

{x|x: N, x>=1}

Because if x :R then 1.5, 8/7,...... should have exist but here we don't see these, we just see 1,2,3,......