... Four of the diagrams below show this object viewed from different angles, but one diagram shows a different object... Allan and Zarwa are playing a game tossing a coin.[r] ...
... Leila has a number of identical square tiles that she puts together edge to edge in a single row, making a rectangle.. The perimeter of this rectangle is three times that of a single til[r] ...
... Questions 26–30 are worth 6, 7, 8, 9 and 10 marks, respectively. 26. Let A be a 2018-digit number which is divisible by 9. Let B be the sum of all digits of A and C be the sum of all digits of B. Find the sum of ...
... Republication, systematic copying, or multiple reproduction of any part of this material is permitted only under license from the Chiuchang Mathematics Foundation.. Requests for such [r] ...
... I notice that if I remove 100 toy soldiers, then I can arrange the remaining ones into a rectangular array with 5 fewer rows and 5 more columns. How many toy soldiers would I have to rem[r] ...
... Republication, systematic copying, or multiple reproduction of any part of this material is permitted only under license from the Chiuchang Mathematics Foundation.. Requests for such [r] ...
... Warren drew two large squares that overlap to form the hexagon shown.. Beginning with a row of 20 coins, Anh takes the first coin, then every fourth coin after that.[r] ...
... How many toy soldiers would I have to remove from the original configuration to be able to arrange the remaining ones into a rectangular array with 11 fewer rows and 11 more columns. 30[r] ...
... For n ≥ 3, the sequence of centred n-gon numbers is found by starting with a central dot, then adding layers consisting of n-gons of dots around this centre, where the number of dots on [r] ...
... Republication, systematic copying, or multiple reproduction of any part of this material is permitted only under license from the Chiuchang Mathematics Foundation. Requests for such p[r] ...