Question

Let A = {the Rationals} and B = {the Irrationals}. Find A B.

A)the Integers
B)the Reals
C)the Rationals
D)the Irrationals

Answer 1

missing something?

Answer 2

\(A\cup B\)? or maybe
\(A\cap B\)?

Answer 3

Is there cross or multiply??

Answer 4

Or,
\[A \times B\]

Answer 5

- It's missing the thing that kinda looks like a "U"

Answer 6

I will guess \(A\cup B\) since \(A\cap B=\emptyset\)

Answer 7

that means union, anything that is one or the other or both

Answer 8

since "irrationals" are defined as real numbers that are not rational, the union gives you rationals and irrationals taken together, which is everything

Answer 9

- Then what's the answer ?

Answer 10

all real numbers

Answer 11

- K, thank you !