Write down all of the prime numbers between 15 and 25.

Simplify the expression 10/11(22z) + (a+5) -1

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

(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.