1. Which of the following numbers is not the sum of three consecutive integers?

2. The diagram shows a unit cube coloured in blue. Unit cubes are then glued face to face to each of its six faces to form a three dimensional "cross". If the unit cubes coloured yellow are not glued face to face to all the faces of this cross, how many yellow unit cubes are required?

3. The total bus fare was $2.80. What was the distance travelled when the fare is $0.8 for the first 0.25km and $0.10 for each 0.33 additional km?

4. Find the area of the shaped part of this figure. (Take π = 3.14)

5. Three children Adam, Brian, Chris play a game in which the winner is awarded a prize. If they play three separate games althogether, in how many ways can the prizes be won?