By accident, six burned-out bulbs have been mixed in with 16 good ones. ken is replacing old bulbs in his house. if he selects two bulbs at random from the box of 22, what is the probability they both work?

(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.