Here is a probability scale: A, B,E, T,0,1

Write the letter of the arrow that matches each probability word.

a)’certain' is shown by the letter’

b)’evens' is shown by the letter

c) 'impossible' is shown by the letter

(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.