Question

Which sets of numbers are closed under addition?

Choose all answers that are correct.

A.
whole numbers

B.
natural numbers

C.
negative integers

D.
integers

Answer 1

What does closed mean?

Answer 2

idk

Answer 3

Well, find that out--and I'm sure you'll get your answer!
=D

Answer 4

If you add any two numbers of that set, the resultant should also be in that set, this is called Closed Set..

Answer 5

so its b and d?

Answer 6

Whole number set is : \(\{0,1,2,3,...................\}\)

Add any two numbers, 0+1 = 1, 1 is in the set. Take more examples and check..

Answer 7

I think \(a\) is there..
Check for \(b\) now, yes it is..
Similarly, check for others and you will come to know that, All are correct. :P

Answer 8

Negative integers set is : \(\{-1, -2,-3,-4........................\}\)

Add any two numbers : \(-1 + (-2) =-3\), \(-3\) is in the set..

Answer 9

so ill say all?

Answer 10

Yes you will.. :P

Answer 11

ok