Answer:
Yes R ⊂ A.
Explanation:
We are given a set U as:
--- U= x
--- A= x is a color of the rainbow
We know that a rainbow has seven colors named as VIBGYOR
where V-- Violet
I-- Indigo
B-- Blue
G-- Green
Y-- Yellow
O-- Orange
R-- Red
Also we are given R set as :
-- R= x
This means that R is contained in A since all the elements that belong to R also belongs to set A.
Hence, we may say:
Yes R ⊂ A