|
2013年 5-6年级 Upper Primary 30题 9-10年级 Intermediate 28题 11-12年级 Senior 26题 A hockey game between two teams is ‘relatively close’ if the number of goals scored by the two teams never differ by more than two. In how many ways can the first 12 goals of a game be scored if the game is ‘relatively close’? 五年级做这题有希望做出来么? |
