Are the following statements true :
1. A Ç B¢ = ÆÞ A Ì B
But I think it should be
A Ç B¢ = ÆÞ A Í B
2. A¢È B = U Þ A Ì B
But I think it should be
A¢È B = U Þ A Í B
3.(A – B) È B = A iff B Ì A
But I think it should be
(A – B) È B = A iff B Í A
Plz tell me I am wrong or book is wrong. Plz give ur answer with reason. I don’t want mathematical proof for the correct statements. If possible , plz verify the statement that u say correct or wrong.