哪三位数相加等于13数只能用一次 用1234567810组成三道加法算式,每个数只能用一次
123456789\u4e09\u4f4d\u6570\u76f8\u52a0\u7684\u548c\u76f8\u7b49\uff0c\u6bcf\u4f4d\u6570\u53ea\u80fd\u7528\u4e00\u6b21159 1+5+9=15
267 2+6+7=15
348 3+4+8=15
1+4=5.
2+6=8.
3+7=10.
即:3+9+1=13
0+1+12=13,
0+2+11=13,
0+3+10=13,
0+4+9=13,
0+5+8=13,
0+6+7=13,
1+2+10=13,
1+3+9=13,
1+4+8=13,
1+5+7=13,
2+3+8=13,
2+4+7=13,
2+5+6=13,
3+4+6=13
绛旓細瑙o細1,3,9涓変釜鏁鐩稿姞绛変簬13 鍗筹細3+9+1=13
绛旓細139,148,157,166,175,184,193,229,238,247,256,265,274,283,292,319,328,337,346,355,364,373,382,391,409,418,427,436,445,454,463,472,481,490,508,517,526,535,544,553,562,572,580,607,616,625,634,643,652,661,670,706,715,724,733,742,751,760,805,814,823,832,841,...
绛旓細鍦ㄦ墍鏈変笁浣嶆暟涓紝鍚勪釜鏁颁綅涔嬪拰绛変簬13鐨勬暟鏈148锛274锛364锛139锛157锛166锛175锛184锛193锛184锛418锛481锛841锛814锛247锛724锛742锛346锛634锛643锛319锛391锛913锛931锛517锛571锛715锛751锛616锛661锛427鍏31涓
绛旓細3+4+6
绛旓細鐧句綅鏄1,鏈139~193鍏7涓 鐧句綅鏄2,鏈229~292鍏8涓 鐧句綅鏄3,鏈319~391鍏9涓 鐧句綅鏄4,鏈409~490鍏10涓 鐧句綅鏄5,鏈508~580鍏9涓 鐧句綅鏄6,鏈607~670鍏8涓 鈥︹︾櫨浣嶆槸9,鏈904~940鍏5涓 鎵浠,鎬绘暟涓 7+8+9+10+9+8+7+6+5 =69(涓)
绛旓細鐧句綅鏄1锛屾湁139~193鍏7涓 鐧句綅鏄2锛屾湁229~292鍏8涓 鐧句綅鏄3锛屾湁319~391鍏9涓 鐧句綅鏄4锛屾湁409~490鍏10涓 鐧句綅鏄5锛屾湁508~580鍏9涓 鐧句綅鏄6锛屾湁607~670鍏8涓 鈥︹︾櫨浣嶆槸9锛屾湁904~940鍏5涓 鎵浠ワ紝鎬绘暟涓 7+8+9+10+9+8+7+6+5 =69(涓)...
绛旓細6涓
绛旓細1銆佷粠涓綅寮濮嬬浉鍔狅細5+8=13銆傚皢3鍐欏湪涓綅涓婏紝灏1杩涗綅鍒板崄浣嶃2銆佹帴鐫鐩稿姞鍗佷綅涓婄殑鏁帮細4+7+杩涗綅鐨1=12銆傚皢2鍐欏湪鍗佷綅涓婏紝灏1杩涗綅鍒扮櫨浣嶃3銆佹渶鍚庣浉鍔犵櫨浣嶄笂鐨勬暟锛3+6+杩涗綅鐨1=10銆傚皢0鍐欏湪鐧句綅涓娿傛暟瀛︿腑娑夊強鍒拌繘浣嶇殑杩愮畻涓嶄粎闄愪簬涓変綅鏁板姞娉锛岃繕鍖呮嫭浠ヤ笅鍑犵杩愮畻锛1銆佸浣嶆暟鍔犳硶锛氬綋涓...
绛旓細瀹冪殑鍚勪釜鏁颁綅鐨勫拰绛変簬13銆傝繖涓渶灏忕殑鑷劧鏁版槸锛319锛岃В棰樺涓嬶細涓銆佸悇涓暟浣嶅拰绛変簬13锛屽張鑳借11鏁撮櫎锛屾渶灏忚嚜鐒舵暟鑷冲皯鏄涓変綅鏁锛涗簩銆佺櫨浣鏁版槸1锛屽張鑳借11鏁撮櫎锛屾暟浣嶅拰閮芥槸鍋舵暟锛涗笁銆佺櫨浣嶆暟鏄2锛屽張鑳借11鏁撮櫎锛屾暟浣嶅拰閮芥槸鍋舵暟锛涘洓銆佺櫨浣嶆暟鏄3锛屽張鑳借11鏁撮櫎锛屾暟浣嶅拰鏄13鐨勪笁浣嶆暟鏄319 ...
绛旓細瑙o細璁剧櫨浣嶆暟瀛楁槸x锛屽崄浣嶆暟瀛楁槸y锛屼釜浣嶆暟瀛楁槸z銆倄+y+z=13鈶 x=3y鈶 x+y-z=3鈶 鎶娾憽浠e叆鈶犫憿 4y+z=13 4y-z=3 瑙e緱y=2锛寊=5 浠e叆鐨剎=6 绛;杩欎釜鏁版槸625.