... corner piece edge piece interior piece (two straight sides at right angles) (one straight side) (no straight sides).. We treat two shapes as the same if one is a rotation of the other, w[r] ...
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... 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 p[r] ...