Ajar contains 3 blue marbles, 6 red marbles, 1 green marble, and 2 black marbles. a marble is chosen at random from the jar and replaced. then another marble is chosen at random. find the probability of the first marble being red and the second marble being green.

1⁄2 = 50%

7⁄24 = 29.2%

7⁄12 = 58.3%

1⁄24 = 4.2%

7⁄144 = 4.9%

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.