A new soda machine has 50 options to customize any type of drink you would like at a movie theater. Customers can choose any 4 of these options for their soda, but cannot repeat any of them. How many different combinations exist? A) 5,527,200 B) 6,250,000 C) 9,500,000 D) 10,300,750

(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.