Question

If A=3, 6,9,12,B=4, 6,8,10,12andX=1, 2,3,4,5,6,7,8,9,10,11,12 is auniversal set then the set B-A' is what❓

Answer 1

Here A' = 2,4,5,7,8,10,11

So,

B-A' = 2,5,7,11