1.Out of 5 mathematics teachers and 7 English teachers a committee consisting of 2 mathematics teachers and 3 English teachers is to be formed. In how many ways can this be done if any of the mathematics teachers and any English teachers can be chosen ?
2.A bag contains 5 white balls, 3 black balls and 2 green balls. A ball is chosen at random from the bag and not replaced. in three draws find the probability of obtaining white, black and green in that order.
im not getting these