Question

Is 1/2 a real and rational number?

Answer 1

Yes

Explanation:

Real numbers are numbers that can be placed on a number line and rational numbers are numbers that can be written as a fraction, `1/2` meets both of these conditions

Answer 2

Yes, It is.

Explanation:

`QQ` is the set of all numbers in the form `QQ={a/b/a,b in ZZ; and b!=0}`. As 1/2 is on this form, 1/2 is a rational number

By the other hand, `RR` is a superset containing `QQ`, it's say

`QQsubRR`, That means whichever element of `QQ` is also a element of `RR` and hence, 1/2 is also a real number