请问1.2.3.4.5.6.7.8复式三中三不重复数字有那几组？ 请问1.2.3.4.5.6.7.8三中三不重复数字有那56组...
24\u4e2a\u53f7\u590d\u5f0f\u4e09\u4e2d\u4e09\u5171\u6709\u51e0\u7ec4\uff1f24\u4e2a\u590d\u5f0f\u4e09\u4e2d\u4e09\u5171\u67092024\u7ec4\u3002
\u6982\u5ff5\uff1a
\u5728\u4e00\u4e2a\u53d8\u5316\u8fc7\u7a0b\u4e2d\uff0c\u53d1\u751f\u53d8\u5316\u7684\u91cf\u53eb\u53d8\u91cf\uff08\u6570\u5b66\u4e2d\uff0c\u5e38\u5e38\u4e3ax\uff0c\u800cy\u5219\u968fx\u503c\u7684\u53d8\u5316\u800c\u53d8\u5316\uff09\uff0c\u6709\u4e9b\u6570\u503c\u662f\u4e0d\u968f\u53d8\u91cf\u800c\u6539\u53d8\u7684\uff0c\u6211\u4eec\u79f0\u5b83\u4eec\u4e3a\u5e38\u91cf\u3002
\u81ea\u53d8\u91cf\uff08\u51fd\u6570\uff09\uff1a\u4e00\u4e2a\u4e0e\u5b83\u91cf\u6709\u5173\u8054\u7684\u53d8\u91cf\uff0c\u8fd9\u4e00\u91cf\u4e2d\u7684\u4efb\u4f55\u4e00\u503c\u90fd\u80fd\u5728\u5b83\u91cf\u4e2d\u627e\u5230\u5bf9\u5e94\u7684\u56fa\u5b9a\u503c\u3002
\u56e0\u53d8\u91cf\uff08\u51fd\u6570\uff09\uff1a\u968f\u7740\u81ea\u53d8\u91cf\u7684\u53d8\u5316\u800c\u53d8\u5316\uff0c\u4e14\u81ea\u53d8\u91cf\u53d6\u552f\u4e00\u503c\u65f6\uff0c\u56e0\u53d8\u91cf\uff08\u51fd\u6570\uff09\u6709\u4e14\u53ea\u6709\u552f\u4e00\u503c\u4e0e\u5176\u76f8\u5bf9\u5e94\u3002
\u51fd\u6570\u503c\uff1a\u5728y\u662fx\u7684\u51fd\u6570\u4e2d\uff0cx\u786e\u5b9a\u4e00\u4e2a\u503c\uff0cy\u5c31\u968f\u4e4b\u786e\u5b9a\u4e00\u4e2a\u503c\uff0c\u5f53x\u53d6a\u65f6\uff0cy\u5c31\u968f\u4e4b\u786e\u5b9a\u4e3ab\uff0cb\u5c31\u53eb\u505aa\u7684\u51fd\u6570\u503c\u3002
\u6269\u5c55\u8d44\u6599\uff1a\u51fd\u6570\u7684\u5b9a\u4e49\uff1a\u7ed9\u5b9a\u4e00\u4e2a\u6570\u96c6A\uff0c\u5047\u8bbe\u5176\u4e2d\u7684\u5143\u7d20\u4e3ax\u3002\u73b0\u5bf9A\u4e2d\u7684\u5143\u7d20x\u65bd\u52a0\u5bf9\u5e94\u6cd5\u5219f\uff0c\u8bb0\u4f5cf\uff08x\uff09\uff0c\u5f97\u5230\u53e6\u4e00\u6570\u96c6B\u3002\u5047\u8bbeB\u4e2d\u7684\u5143\u7d20\u4e3ay\u3002
\u5219y\u4e0ex\u4e4b\u95f4\u7684\u7b49\u91cf\u5173\u7cfb\u53ef\u4ee5\u7528y=f\uff08x\uff09\u8868\u793a\u3002\u51fd\u6570\u6982\u5ff5\u542b\u6709\u4e09\u4e2a\u8981\u7d20\uff1a\u5b9a\u4e49\u57dfA\u3001\u503c\u57dfC\u548c\u5bf9\u5e94\u6cd5\u5219f\u3002\u5176\u4e2d\u6838\u5fc3\u662f\u5bf9\u5e94\u6cd5\u5219f\uff0c\u5b83\u662f\u51fd\u6570\u5173\u7cfb\u7684\u672c\u8d28\u7279\u5f81\u3002
\u6620\u5c04\u7684\u5b9a\u4e49
\u8bbeA\u548cB\u662f\u4e24\u4e2a\u975e\u7a7a\u96c6\u5408\uff0c\u5982\u679c\u6309\u7167\u67d0\u79cd\u5bf9\u5e94\u5173\u7cfb  \uff0c\u5bf9\u4e8e\u96c6\u5408A\u4e2d\u7684\u4efb\u4f55\u4e00\u4e2a\u5143\u7d20a\uff0c\u5728\u96c6\u5408B\u4e2d\u90fd\u5b58\u5728\u552f\u4e00\u7684\u4e00\u4e2a\u5143\u7d20b\u6765\u4e0e\u4e4b\u5bf9\u5e94\u3002
\u90a3\u4e48\uff0c\u8fd9\u6837\u7684\u5bf9\u5e94\uff08\u5305\u62ec\u96c6\u5408A\uff0cB\uff0c\u4ee5\u53ca\u96c6\u5408A\u5230\u96c6\u5408B\u7684\u5bf9\u5e94\u5173\u7cfbf\uff09\u53eb\u505a\u96c6\u5408A\u5230\u96c6\u5408B\u7684\u6620\u5c04\uff08Mapping\uff09\uff0c\u8bb0\u4f5c  \u3002\u5176\u4e2d\uff0cb\u79f0\u4e3aa\u5728\u6620\u5c04f\u4e0b\u7684\u8c61\uff0c\u8bb0\u4f5c\uff1a  ; a\u79f0\u4e3ab\u5173\u4e8e\u6620\u5c04f\u7684\u539f\u8c61\u3002\u96c6\u5408A\u4e2d\u6240\u6709\u5143\u7d20\u7684\u8c61\u7684\u96c6\u5408\u8bb0\u4f5cf\uff08A\uff09\u3002
\u5219\u6709\uff1a\u5b9a\u4e49\u5728\u975e\u7a7a\u6570\u96c6\u4e4b\u95f4\u7684\u6620\u5c04\u79f0\u4e3a\u51fd\u6570\u3002\uff08\u51fd\u6570\u7684\u81ea\u53d8\u91cf\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u539f\u8c61\uff0c\u56e0\u53d8\u91cf\u662f\u7279\u6b8a\u7684\u8c61\uff09
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u51fd\u6570
\u76f4\u63a5\u662fC8(3)=8*7*6/(3*2)=56.
这里共有八个数字，所以三不重复共有8×7×6=336组绛旓細锛1+2+3+4+5+6+7锛+锛7+6+5+4+3+2+1锛夊搴斾綅缃浉鍔犻兘鏄8锛屾墍浠ヤ笂闈㈣繖涓畻寮忕瓑浜8*7=56 鎵浠1+2+3+4+5+6+7=56/2=28
绛旓細瑙ｏ細濉浘濡備笅锛歺涓虹┖鏍 x.1.x 2.3.4 x.5.x 妯=2+3+4=9 绔=1+3+5=9 妯=绔=9
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绛旓細1.2.3.4.5.6.7.8.9.10.11.94.95.96.97.98.99.100鐨勬渶灏忓叕鍊嶆暟鏄嚑锛 绠鍗曞晩,涔熷氨鏄1~100鐨勮川鏁扮殑涔樼Н> 涔熷氨鏄2*3*5*7*11*13*17*19*23*29*31*37*41*43*47*53*59*61*67*71*73*79*83*89*97= 娌″甫璁＄畻鍣 3.6.4鐨勬渶灏忓叕鍊嶆暟鏄嚑 12 543鐨勬渶灏忓叕鍊嶆暟...
绛旓細1+2-3+4.鎬庝箞鍜5+6-7
绛旓細瑙ｆ瀽锛8鏄4涓2鐨勫嶆暟锛10鏄5鐨勫嶆暟锛9鏄3鐨勫嶆暟锛屽洜姝ゆ眰10銆9銆8銆7銆6銆5銆4銆3銆2鐨勬渶灏忓叕鍊嶆暟锛屽氨鏄眰10銆9銆8銆7銆6鐨勬渶灏忓叕鍊嶆暟銆10=2*5锛9=3*3锛8=2*2*2锛7鏄川鏁帮紱6=2*3锛5鏄川鏁帮紱4=2*2锛3鍜2鏄川鏁般傛墍浠ユ渶灏忓叕鍊嶆暟搴斾负2脳5脳3脳3脳2脳2脳2脳7脳2脳3...
绛旓細瑙ｇ瓟锛1锛2锛3锛5鏄川鏁帮紝杩樺墿涓1锛4锛6锛7锛8锛9锛1鍜6缁勬垚61锛4涓7缁勬垚47锛8涓9缁勬垚89锛屾墍浠ュ彲浠ユ瀯鎴愮殑璐ㄦ暟鏈2锛3锛5锛47锛61锛89锛89-2=87鐢1銆2銆3銆4銆5銆6銆7銆8銆9杩9涓暟瀛楀悇涓娆★紝鏈澶氬彲浠ョ粍鎴6涓川鏁帮紝鍏朵腑鏈澶х殑璐ㄦ暟涓庢渶灏忕殑璐ㄦ暟涔嬪樊鏈灏忎负87銆2銆佺敤1銆2銆3銆4...
绛旓細2/7=7/2 5 =1/5 1/3 =3 1 =1 15/8 =8/15 4.鎶婁笅闈㈠悇姣斿寲鎴愭渶绠鍗曠殑鏁存暟姣斻8锛12 =2锛3 0.25锛0.45 =5锛9 1/4锛1/8+2锛1 5.鍒ゆ柇涓嬮潰鐨勮娉曟槸鍚︽纭傦紙1锛変竴涓湡鍒嗘暟鐨勫掓暟涓瀹氭瘮杩欎釜鐪熷垎鏁板ぇ銆 ( 鈭 )锛2锛変竴涓暟涔樺垎鏁扮殑绉竴瀹...
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