A. Find the union of the following:

1.
X = {x:n € N, x = 2n, n<4}
Y = {x:x is an even number less than 10}

2.
X = { x:x is a natural number and multiple of 3}
Y = { x:x is a prime number less than 19}

3.
X = {x:x is an integer -3 < x <3}
Y = {x:x is a factor of 8}


D. Find the complement of the following

Given :
Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
A = {1, 2, 4, 6, 8, 10}
B = {1, 3, 5, 7, 8, 9}

a. A'
b. B'
c. A' U B'
d. A' U B'
e. (A U B)'
f. (A U B)' = A' intersection of B'​