Question

Which sets of numbers are closed under addition?

Choose all answers that are correct.

A.
{0, 2, 5, 8}

B.
even integers

C.
rational numbers

D.
{0}

Answer 1

I would have to go with B. A set of elements is closed under an operation if, when you apply the operation to elements of the set, you always get another element of the set.

Answer 2

I'm going with @Agl202

Answer 3

so only b

Answer 4

Yep

Answer 5

but its more than one

Answer 6

Ur right.
A) no 5 + 2 = 7. 7 is not in the set.
B) Would be the answer.
C) Would be the answer.
D) 0+0=0

Answer 7

b