Your sock drawer has four white socks, two brown socks, and two black socks. You randomly pick a sock and put it on your left foot and then pick another sock and put it on your right foot. What is the probability that you leave the house with a white sock on your left foot and a brown sock on your right foot?

(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.