Eduprobe
Question:
If X = {4n | n ∈ N} and Y = {9(n - 1) | n ∈ N}, where N is the set of natural numbers, then X ∪ Y is equal to N, Y - X, X, Y
Y - X
X
N
Y
Solution:
SetXcontains elements of the form
Y - X
X
N
Y
SetXcontains elements of the form