InterviewSolution
 Saved Bookmarks
    				| 1. | 
                                    If n(A) = 7; n(B) = 9, n(A ∩ B) = 4; then n[(A × B) ∩ (B × A)] is equal to | 
                            
| Answer» If n(A) = 7; n(B) = 9, n(A ∩ B) = 4; then n[(A × B) ∩ (B × A)] is equal to | |