Universal set U={x:x is an even natural number and x<15} If A={x:x=4n,x≤12 and n∈N}, then A′ is:
Given the universal set = Universal ~set = {x:x∈ N and x<20} ~find:
(i) A = {x:x=3p;p∈ N }
(ii) B = {y:y=2n+3,n∈ N }
(iii) C = {x:x is divisible by 4}
Given U={x:x∈N,x≤9}, A={x:x is divisible by 2} and B={x:x3∈N}, where U is the universal set. Then, (A∪B)−(A∩B) = ____.