摘要: Description Steph is extremely obsessed with “sequence problems” that are usually seen on magazines: Given the sequence 11, 23, 30, 35, what is the ne 阅读全文
posted @ 2017-07-30 20:57 爱国呐 阅读(518) 评论(0) 推荐(0)
摘要: Problem Description Derek and Alfia are good friends.Derek is Chinese,and Alfia is Austrian.This summer holiday,they both participate in the summer ca 阅读全文
posted @ 2017-07-30 20:33 爱国呐 阅读(495) 评论(0) 推荐(0)
摘要: Description KazaQ wears socks everyday. At the beginning, he has nn pairs of socks numbered from 11 to nn in his closets. Every morning, he puts on a 阅读全文
posted @ 2017-07-30 20:11 爱国呐 阅读(468) 评论(0) 推荐(0)
摘要: Description There is a youngster known for amateur propositions concerning several mathematical hard problems. Nowadays, he is preparing a thought-pro 阅读全文
posted @ 2017-07-30 20:01 爱国呐 阅读(228) 评论(0) 推荐(0)