(i)`" If "E_(1)" and "E_(2) " are two mutually exclusive event, then "E_(1)capE_(2)=phi.`
(ii)`" If "E_(1)" and "E_(2) " are mutually exclusive and exhaustive events, then "E_(1)capE_(2)=phi " and "E_(1)cupE_(2)=S.`
(iii)`" If "E_(1)" and "E_(2) " ahve common outcomes, then "(E_(1)-E_(2))cup(E_(1)capE_(2))=E_(1)`
(iv) `"If "E_(1)" and "E_(2) " are two events such that "E_(1)subE_(2)rArrE_(1)capE_(2)=E_(1)`
