hi , please help this probability questions with clear steps and explanation , thank you

Question 2 (25 marks) A hospital employs 75 doctors. The following table summarises their length of service at the hospital, classified by gender. Less than 5 years 5 to 10 years More than 10 years Male 12 20 13 Female 8 15 7 (a) Find the probability that a randomly selected doctor: i) is male; ii) is female and has more than 10 years service; iii) is male given that the doctor has less than 5 years of service. (b) Three doctors are selected at random, without replacement. Find the probability that i) the selected doctors are of the same gender; ii) the selected doctors are female with 5 to 10 years of service; iii) exactly one of the selected doctors is male