Question

a= 1,4,9,16
b= 3,6,9,12,15
c=1,3,5,7,11,13,15

list out all of the element in (a u b u c)'

Answer 1

\[(a \cup b \cup c \cup )'\]

Answer 2

(a U b U c)={1,3,4,5,6,7,9,11,12,13,15,16}
So,
(a U b U c)'=\[\phi\]

Answer 3

WHAT IS PHI?

Answer 4

it denotes an empty set

Answer 5

if there is no universal set then the answer is null or empty set,{}