Then the event that their statements contradicts is denoted by ( E F' ) ( E' F )
Then Required Probability is denoted by..... P ( ( E F' ) ( E' F ) ) = P ( E F' ) + P( E' F )
= P (E).P(F') + P(E')P(F)
= (3/4)(1/5) + (4/5)(1/4)
= 7/20
Hope it is clear now..........
Cheerss!!!
............................................................................................................................................................................................
There's Light at the end of every Tunnel, so KEEP MOVING....
Best of luck to all my mates....
............................................................................................................................................................................................
Moderation Team
![[Post New]](/templates/default/images/icon_minipost_new.gif){kind=icon}
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
418
F' ) 
F' ) 
