A team of medical students doing their internship have to assist during surgeries at a city hospital.The probabilities of surgeries rated as very complex,routine,simple rated as very complex,complex,complex, routine,simple or very simple respectively 0.15,0.20,0.31,0.26 and 0.08.Find the probabilities that a particular surgery will be rated
neither very complex nor very simple

A team of medical students doing their internship have to assist during surgeries at a city hospital.The probabilities of surgeries rated as very complex,routine,simple rated as very complex,complex,complex, routine,simple or very simple respectively 0.15,0.20,0.31,0.26 and 0.08.Find the probabilities that a particular surgery will be rated
routine or complex

One of the four persons John, Rita, Aslam or Gurpreet will be promoted next month.Consequently, the sample space consists of four elementary outcomes S={Johnpromoted, Rita promoted, Gurpreet promoted} You are told that the chances of John's promotion is same as that of Gurpreet, Rita's Chances of promotion are twice as likely as Johns.Aslam's chances are four times that of John.
Determine P(John promoted)  P(Rita promoted);  P(Aslam promoted)
P(Gurpreet promoted)

One of the four persons John, Rita, Aslam or Gurpreet will be promoted next month.Consequently, the sample space consists of four elementary outcomes S={Johnpromoted, Rita promoted, Gurpreet promoted} You are told that the chances of John's promotion is same as that of Gurpreet, Rita's Chances of promotion are twice as likely as Johns.Aslam's chances are four times that of John.
If A={John promoted or Gurpreet promoted}, then find P(A)

If A and B are mutually exclusive events, such that P(A)=0.35 and P(B)=0.45, then find P(A\(\cap \)B)