8尾拖6尾二中二有多少组
118kj\u5f00\u5956\u73b0\u573a\u4f8b\u59824\u5c3e\u62d6\u864e\u8096\u4e8c\u4e2d\u4e8c\u6709\u591a\u5c11\u7ec4
\u6839\u636e\u9898\u610f\uff0c\u53ef\u4ee5\u786e\u5b9a\u9700\u8981\u9009\u53d6\u4e00\u53ea\u5c5e\u4e8e4\u5c3e\u62d6\u864e\u8096\u7684\u53f7\u7801\u5c3e\u6570\uff0c\u518d\u4ece\u5269\u4e0b\u768411\u4e2a\u53f7\u7801\u4e2d\u9009\u53d6\u4e24\u4e2a\u53f7\u7801\u4e2d\u4e8c\u3002\u6240\u4ee5\uff0c\u8ba1\u7b97\u7ec4\u5408\u6570\u7684\u65b9\u6cd5\u4e3a\uff1aC(4,1) * C(11,2) = 4 * 55 = 220\u56e0\u6b64\uff0c4\u5c3e\u62d6\u864e\u8096\u4e8c\u4e2d\u4e8c\u5171\u6709220\u7ec4\u3002
\u5bf9\u3010\u95ee\u9898\u8865\u5145\uff1a\u4e0d\u662f\u5566\uff01\u7528\u4e00\u697c\u7684\u5168\u76d6\u4f4f\u4e86\u3011\u7684\u56de\u7b54\uff1a
\u83dc\u5355\u3010\u7a97\u53e3\u3011---\u3010\u6392\u5217\u3011---\u5782\u76f4\u5e73\u94fa\u3002
绛旓細8灏炬嫋6灏句簩涓簩鏈夊灏戠粍 鎴戞潵绛 鍒嗕韩 寰俊鎵竴鎵 缃戠粶绻佸繖璇风◢鍚庨噸璇 鏂版氮寰崥 QQ绌洪棿 涓炬姤 娴忚1 娆 鍙変腑1涓垨澶氫釜涓嬮潰鐨勫叧閿瘝,鎼滅储鐩稿叧璧勬枡銆備篃鍙洿鎺ョ偣鈥滄悳绱㈣祫鏂欌濇悳绱㈡暣涓棶棰樸 浜屼腑 鎼滅储璧勬枡 鏈湴鍥剧墖 鍥剧墖閾炬帴 鎻愪氦鍥炵瓟 鍖垮悕 鍥炵瓟鑷姩淇濆瓨涓负浣犳帹鑽:鐗瑰埆鎺ㄨ崘涓轰粈涔堟棩鏈汉寰堝皯鏈夎偉鑳栫殑?
绛旓細10缁銆傚叕寮忔槸2涓负1缁勶紝3涓负3-1+1=3锛4涓负4-1+3=6锛5涓负5-1+6=10锛6涓负6-1+10=15锛7涓负7-1+15=21锛屼緷姝ょ被鎺紝灏辨槸10缁勩
绛旓細浜屼腑浜岀墰鎷8灏惧叡鏈2缁銆傛牴鎹煡璇㈢浉鍏冲叕寮淇℃伅鏄剧ず锛屼簩涓簩鐗涙嫋8灏惧叡鏈2缁勶紝涓缁勭敱2涓墰瀹炰綋鍜8鏉″熬宸寸粍鎴愶紝鍙︿竴缁勭敱2涓墰涓ゅご鐗靛紩1鏉″熬宸寸粍鎴愶紝鎬诲叡缁勬垚2涓粍鍚堬紝姣忎釜缁勫悎鐢4涓墰鍜8鏉″熬宸寸粍鎴愩
绛旓細灏炬暟鎷栬倴浜屼腑浜屽寮忕殑璇濇槸36缁銆傝倴鏄5涓暟鐨勮瘽鏄45缁勩傚熬鏁版嫋鑲栦簩涓簩鏄纰扮殑璇濇槸20缁勶紝鑲栨槸5涓暟鐨勮瘽鏄25缁勩傚熬鏁6銆8涓繀椤昏嚦灏戞湁涓涓嚭鐜帮紝鎼厤榧犲厰榫欑墰鐚寸嫍鐚紝鍏辫21娉ㄣ傚熬鏁1銆3銆7鍚屾椂蹇呴』鍑虹幇鍏朵腑鐨勪袱涓紝鎼厤铏庡厰鐚磋泧楦＄嫍鐚紝鍏辫35娉ㄣ傚熬鏁0銆2銆4銆6銆8涓繀椤昏嚦灏戞湁涓涓嚭鐜...
绛旓細9涓暟涓や袱鎺掑垪鍏辨湁72绉嶇粍鍚銆傝繖閬撻涓紝灏9涓暟涓や袱鎺掑垪锛岄偅涔堝氨鍒嗗崄浣嶆暟鍜屼釜浣嶆暟锛岃屼竴涓暟瀛楁棦鑳芥槸鍗佷綅鏁帮紝涔熻兘鍦ㄤ釜浣嶆暟涓娿傛墍浠9涓暟涓殑姣忎竴涓暟閮借兘璺熷叾瀹冨叓浣嶆暟杩涜缁勫悎锛屼篃灏辨槸姣忎竴涓暟閮借兘杩涜鍏缁勫悎锛岄偅涔9涓暟灏卞叡鏈8?9=72绉嶇粍鍚堛
绛旓細7涓彿鐮浜屼腑浜屾湁21缁勩傚洜涓轰竴涓2涓嶈兘璇存槸缁勫悎锛屾墍浠ュ繀椤绘槸涓や釜2鎴栦袱涓互涓2鎵嶈兘鏄粍鍚堛傚洜姝わ紝鍙互涓や釜涓缁勶紝涓変釜涓缁勶紝鍥涗釜涓缁勶紝浜斾釜涓缁勶紝鍏涓竴缁勶紝涓冧釜涓缁勶紝鍏6绉嶃傚鏋滀笉鍏佽鍙嶅浣跨敤2锛岄偅涔堝彧鑳界粍鎴2+2锛2+2锛2+2+2鎴2+2锛2+2+2+2+2鎴2+2+2锛2+2+2+2銆傚彿鐮佸寮忓惈涔...
绛旓細涓鑸槸鏈30鍒50缁勪箣闂磋繖涓尯闂寸殑銆
绛旓細鍗佸叓缁浜屼腑浜锛岃繘琛岀殑灏炬嫋榫欑殑鏁板瓧閲忔槸16涓缁勶紝涓鍏18缁勪腑浜岋紝缃戠粶娴佽璇嶏紝澶氫负鍒濅簩骞寸骇闈掑皯骞寸殑鏌愪簺鐥呮佽嚜鎴戞剰璇嗭紝鏉ユ簮浜庢棩鏈紝鐢辫壓浜轰紛闆嗛櫌鍏夊湪骞挎挱鑺傜洰浼婇泦闄㈠厜娣卞鐨勯┈楣垮姏涓彁鍑恒備簩涓簩灏辨槸瑕佷袱涓暟瀛楀湪涓缁勶紝1灏5涓紝8灏5涓紝褰撶劧鏄5涔樹互5绛変簬25缁勪簡銆傚彂琛屽僵绁ㄩ泦璧勫彲浠ヨ鏄幇浠ｅ僵绁ㄧ殑鍏卞悓鐩殑...
绛旓細5灏炬嫋8灏句簩涓簩鐨勭粍鍚堟柟寮忔湁25缁勩傝繖鏄洜涓哄湪涓涓5涓崟浣嶇殑鏁扮粍涓紝浠婚変竴涓綅缃斁缃5锛屼綑涓嬬殑8涓綅缃彲浠ユ斁缃叾浠栨暟瀛楋紝鎵浠ユ湁C(5锛1)脳C(8锛1)=5脳8=40绉嶄笉鍚岀殑缁勫悎鏂瑰紡銆備絾杩欏彧鏄2涓2鐨勭粍鍚堟柟寮忥紝鍥犳瀹為檯鐨勭粍鍚堟柟寮忓簲璇ユ槸40缁勯櫎浠2锛屽嵆20缁勩
绛旓細鏄厓绱犳绘暟锛宬 鏄渶瑕侀夊彇鐨勫厓绱犳暟銆傚浜庢垜浠殑鎯呭喌锛宯 = 5锛宬 = 2锛屼唬鍏ュ叕寮忚绠楋細C(5, 2) = 5! / (2!(5-2)!) = 5! / (2!3!) = (5 * 4 * 3!) / (2 * 1 * 3!) = (5 * 4) / (2 * 1) = 10 鎵浠ワ紝澶嶅紡杩灏8.2.4.0.1浜屼腑浜鐨勭粍鍚堟暟閲忎负 10 缁勩
