If X =(1,2,3,4...10),A=(1,2,5)and B=(6,7)then prove that - A intersection B\'=A

If X =(1,2,3,4...10),A=(1,2,5)and B=(6,7)then prove that - A intersect

1.	If X =(1,2,3,4...10),A=(1,2,5)and B=(6,7)then prove that - A intersection B\'=A
Answer» A=(1,2,5)B=(6,7)X is the universal set for A and B (X=(1,2,3...10)B\'=(1,2,3,4,5,6,7,8,9,10)From LHS side(1,2,3) intersection (1,2,3,4,5,6,7,8,9,10)(1,2,5)(which is equal to A) Hence it is proved<br>A=(1,2,5)B=(6,7)X is the universal set for A and B { X =(1,2,3,4...10)}B\'={1,2,3,4,5,8,9,10} from LHS side{1,2,5} intersection{1,2,3,4,5,8,9,10}{1,2,5} (which is equal to A)Hence it is proved