有一串数,最前面的四个数依次是1、9、9、5,从第五个数起,每个数都是它前面四个数之和的个位数字，问这一 有一串数最前面四个数依次是1、9、8、7、从第5个数起，每一...

\u6709\u4e00\u4e32\u6570\uff0c\u6700\u524d\u9762\u7684\u56db\u4e2a\u6570\u4f9d\u6b21\u662f\u30011\u30019\u30018\u30017\u3001\u4ece\u7b2c\u4e94\u4e2a\u6570\u8d77\uff0c

\u7528\u53cd\u8bc1\u6cd5
\u8bc1\uff1a\u5047\u8bbe\u5b58\u5728\u4f9d\u6b21\u51fa\u73b0\u76841\u30019\u30018\u30018\u8fd9\u56db\u4e2a\u6570
\u5219 8\u2261x+1+9+8(mod10)
8\u2261x+8(mod10)
\u53c80<x<10\uff0cx\u2261x(mod10)
\u2234 8\u2261x+8(mod10)\u4e0d\u6210\u7acb
\u77db\u76fe
\u5047\u8bbe\u4e0d\u6210\u7acb\uff0c\u539f\u540d\u9898\u5f97\u8bc1\u3002

\u5199\u51fa\u8fd9\u6570\u5217\u7684\u524d\u51e0\u9879\uff1a
1\uff0c9\uff0c8\uff0c7\uff0c5\uff0c9\uff0c9\uff0c0\uff0c3\uff0c1\uff0c3\uff0c7\uff0c4\uff0c\u2026
\u628a\u8fd9\u4e32\u6570\u6309\u5947\u3001\u5076\u6570\u6765\u5206\u7c7b\uff0c\u53ef\u5f97\u4e0b\u9762\u6570\u4e32\uff1a
\u5947\uff0c\u5947\uff0c\u5076\uff0c\u5947\uff0c\u5947\uff0c\u5947\uff0c\u5947\uff0c\u5076\uff0c\u5947\uff0c\u5947\uff0c\u5947\uff0c\u5947\uff0c\u5076\uff0c\u2026
\u663e\u7136\u4ece\u7b2c\u56db\u4e2a\u6570\u5f00\u59cb\uff0c\u603b\u662f \u5947\uff0c\u5947\uff0c\u5947\uff0c\u5947\uff0c\u5076\u7684\u60c5\u51b5\u3002
\u56e0\u6b64\u4e4b\u540e\u7684\u6570\u4e32\u4e2d\u7edd\u4e0d\u53ef\u80fd\u51fa\u73b0\u5947\u5947\u5076\u5076\u7684\u60c5\u51b5\uff0c\u56e0\u6b64\u4e5f\u4e0d\u4f1a\u51fa\u73b01\u30019\u30018\u30018\u3002

考察这串数每个数字的奇偶性可知：
1995偶奇奇奇奇偶奇奇奇奇…
也就是从第5个数起，依次是偶奇奇奇奇循环，而1986是奇奇偶偶，故不可能依次出现1986

瀛﹁屾濆ゥ鏁伴
绛旓細2銆傚湪涓嬮潰鐨涓涓叉暟2,0,1,0,3涓紝浠庣浜斾釜鏁拌捣锛屾瘡涓鏁伴兘鏄浠鍓嶉潰鍥涗釜鏁颁箣鍜岀殑涓綅鏁板瓧銆傞偅涔堝湪杩欎覆鏁颁腑锛岃兘鍚﹀嚭鐜扮浉閭鐨勫洓涓暟渚濇鏄4,3,1,0锛熶笉鑳姐傚亣璁惧彲浠ュ嚭鐜板洓涓暟渚濇鏄4,3,1,0锛涚畻鍒版渶鍚庯紝鏁板垪閲屽叏閮ㄤ负鍋舵暟锛涜屾牴鎹紑濮嬬殑2,0,1,0,3...璁＄畻锛屾暟鍒椾腑鐨勬暟瀛楀簲璇ヤ竴鐩存槸鏈夊鏁版湁...

鍏勾绾ф按骞崇畻鏈9閬
绛旓細4銆佷笉鑳斤紝缂栫▼杩囩▼浠庣暐锛屽叿浣撳仛娉曟湁浠涔堢畝鍗曠殑杩樿浣犳暀鎴戙5銆佸洜涓烘敼鍙樻煇涓笁浣嶆暟鐨勫悇涓暟浣嶇殑椤哄簭,寰楀埌涓涓柊鏁,涓変綅鏁扮殑鍚勪釜鏁颁箣鍜屼笌鏀瑰彉椤哄簭鍚庢墍寰楁柊鏁扮殑鍚勪釜鏁颁箣鍜岀浉绛,杩6涓暟瀛涔嬪拰鏄竴涓伓鏁,鑰999涔嬪拰涓27,鏄鏁颁笉鍙兘 X锛嶏紙X/4-2锛-{[X锛嶏紙X/4-2)]/5+2}=14 鍙緱X锛...

鏃ヨ2绡!!!
绛旓細Chinese National Day. But maybe I need on duty every day. Linyunbin will come back to Dongguan today. Fucking man...1.浠婂ぉ鏄浗搴嗘棩锛屼絾鏄垜涓鐐逛篃娌¤寰椾换浣曞緢蹇箰, 浠呬粎娌℃湁鍐嶅効瀛愩 鏄ㄦ櫄锛屾垜涓嬭浇鑻卞浗绾哥洿鍒版棭涓 3 鐐 ,鏌愪竴涓椂闂存垜鎯宠缁 up.but 涓轰簡瑕佸畬鎴愭垜鐨勬ⅵ銆傛垜鑳藉鐞嗗畠銆

鏈変竴涓叉暟,绗竴琛屾槸1,2,绗簩琛屾槸3,4,5,6,绗笁琛屾槸7,8,9,10,11,12...
绛旓細鍏堢湅姣忎竴琛岀殑绗竴涓鏁帮紝1,3,7 1=0+1 3=2+1 7=2+4+1 绗洓琛屽簲璇ユ槸13=2+4+6+1 绗簲琛2+4+6+8+1=21 銆傘傘傚氨鏄姣忎竴琛岀殑鏁扮殑涓暟鏄搴忔暟鐨勪袱鍊 鎵浠ョ100琛岀涓涓暟鏄2+4+6+8+...+198+1=锛2+198锛*99+1=9901 鎵浠ョ鍥涗釜鏁版槸9904 ...

鏈変竴涓叉暟1,2,3,2,3,4,3,4,5...浠庣涓涓暟寮濮,杩炵画100涓暟鐨鍜屾槸澶氬皯...
绛旓細銆愮瓟妗堣В鏋愩戙愭硶 1銆戣瀵熼涓繖涓涓叉暟锛瀹规槗鎯冲埌鎶婂畠浠笁涓笁涓湴鍒嗙粍濡備笅锛( 1锛 2锛 3)锛(2 锛3 锛 4)锛(3 锛4 锛5 )锛(4 锛5 锛6 )锛屸︹﹀彲浠ュ彂鐜拌繖涓叉暟鐨勬帓鍒楁湁杩欐牱鐨勮寰嬶細绗 1锛2 锛3 锛屸︹︾粍涓涓涓暟渚濇涓1 锛2 锛3 锛屸︹︼紝姣忎竴缁鏁伴兘鏄鐢 3涓繛缁嚜鐒舵暟...

鏈変竴涓叉暟,绗100琛岀殑绗鍥涗釜鏁版槸___.1,23,4,5,67,8,9,10,11,12
绛旓細鐢卞浘鎰忕煡锛氭瘡涓琛岀殑鏁扮殑涓暟鏄琛屽簭鏁扮殑2鍊嶏紝鍗崇100琛岀殑鏁版湁锛100脳2=200锛堜釜锛夛紟鍐嶇湅姣忎竴琛岀殑绗竴涓暟锛1锛3锛7 鈥︾1琛岋細1=0+1锛岀2琛岋細3=2+1锛岀3琛岋細7=2+4+1锛岀鍥涜搴旇鏄細13=2+4+6+1锛岀浜旇搴旇鏄細2+4+6+8+1=21锛屸︽墍浠ョ100琛岀涓涓暟鏄2+4+6+8+鈥+...

鏈変竴涓叉暟,浠讳綍鐩搁偦鐨勫洓涓暟涔嬪拰閮界瓑浜25.宸茬煡绗1涓暟鏄3,绗6涓暟鏄6...
绛旓細涓暟閮界浉鍚岋紝绗3锛7锛11锛15锛屸︿釜鏁伴兘鐩稿悓锛岀4锛8锛12锛16鈥︿釜鏁伴兘鐩稿悓锛庝篃灏辨槸璇达紝杩涓叉暟鏄寜鐓ф瘡鍥涗釜鏁涓轰竴涓懆鏈熷惊鐜嚭鐜扮殑锛庢墍浠ワ紝绗2涓暟绛変簬绗6涓鏁帮紝鏄6锛涚3涓暟绛変簬绗11涓暟锛屾槸7锛鍓涓涓暟渚濇鏄3锛6锛7锛岀鍥涗釜鏁版槸25-锛3+6+7锛=9锛庤繖涓叉暟鎸夌収3锛6锛7锛9鐨勯『搴...

鏈変竴涓叉暟濡備笅1銆2銆4銆7銆11銆16銆22銆佲︹﹁繖鍒楁暟涓31涓暟鏄?
绛旓細瑙:杩涓叉暟鐨瑙勫緥鏄渚濇澧炲姞1234鈥︹︼紝鎵浠ュ彲鍒楀紡寰 1+(1+2+3+4+鈥︹+30)=1+(1+30)脳30梅2 =1+31脳15 =1+465 =466 绛:杩欏垪鏁扮31涓暟鏄466銆

鏈変竴涓叉暟瀹冪殑鎺掑垪瑙勫緥鏄123234345456绛夌瓑鑱槑鐨勪綘鐚滅寽绗60涓暟瀛楁槸澶 ...
绛旓細杩涓叉暟鏄姣3涓暟鏄浠庤嚜鐒舵暟1寮濮嬫瘡3涓暟閫掑1锛屾墍浠ョ60涓槸60梅3=20锛岃繖涓暟瀛楁槸20

鏈変竴涓浠庡皬鍒板ぇ鎺掑垪鐨勬暟0,3,8,15,24,35,48,绗20涓暟鏄澶氬皯?绗琻涓暟鏄...
绛旓細0 0+3 0+3+5 0+3+5+7 0+3+5+7+9 0+3+5+7+9+11 ...杩欎釜鏁板垪鏈韩鏄竴涓瓑宸暟鍒楃殑鍜