英文跟数学好的请进,关于概率的问题Q1:Twenty five hockey players are available for selection for the state team. The team will have six defence players and five forward players.(i) How many teams of eleven players are possible from the group of twenty five?(ii) How many teams can be selected if five forwards are chosen from the ten available and six defence players are chosen from the fifteen available?Q2 Among a group of 40 first-year students at a college campus half

英文跟数学好的请进,关于概率的问题
Q1:Twenty five hockey players are available for selection for the state team. The team will have six defence players and five forward players.
(i) How many teams of eleven players are possible from the group of twenty five?
(ii) How many teams can be selected if five forwards are chosen from the ten available and six defence players are chosen from the fifteen available?
Q2 Among a group of 40 first-year students at a college campus half of them graduated from high school the year before, while the remainder took a “gap-year” graduating from high school two years before. Seventy percent of the first-year students are male and seven of the female students graduated from high school the year before.
(i) Find the probability that a randomly selected first-year student is both female and
took a “gap-year”.
(ii) What is the probability that given a randomly selected student took a “gap-year” the student is male?
Q3 (i) A card is drawn from an ordinary deck of playing cards that has been shuffled a number of times. What is the probability that the card drawn is a red card or a face
card (jack, queen or king)?
(ii) When an unbiased six-sided die is rolled five times what is the probability of having only odd numbers result?