×2<17最大填几 最大填几? 3 *5<20 10* 7 <72 2*9+

\uff08\uff09x2\uff1c17 \uff08\uff09x4\uff1c38 \uff08\uff09x8\uff1c71 \uff08\uff09\u91cc\u6700\u5927\u80fd\u586b\u51e0\uff1f

8x2\uff1c17
9x4\uff1c38
8x8\uff1c71

3\u00d75<20
10\u00d77 <72
2\u00d79>17\uff0c\u56e0\u4e3a\u95ee\u6700\u5927\u586b\u51e0\uff1f\u6240\u4ee5\u80af\u5b9a\u5f97\u7528\u5927\u4e8e\u53f7\u201c>\u201d\uff0c\u6700\u5927\u6574\u6570\u662f17\u3002

8。根据乘法口诀一二得二，二二得四，二三得六，二四得八，二五一十，二六十二，二七十四，二八十六，二九十八，所以最大填8。

浼扮畻704脳2绾︾瓑浜庡灏
绛旓細浼扮畻704脳2绾︾瓑浜庯紙1400锛704鍙互鐪嬪仛锛700锛704x2 鈮700x2 =1400

(-10)3 [(-4)2 -(1-3 2)鑴2]
绛旓細(-10)^3+锛(-4)^2-(1-3+2)脳2锛=-1000+16 =-9984銆

4.6鑴7.5 4.6鑴2..6-46
绛旓細4.6脳7.5+4.6脳2.6-46 =4.6脳(7.5+2.6-10)=4.6脳0.1 =0.46銆

1 2 2 2 2=7
绛旓細1+(2*2*2)-2=7

宸茬煡a+b=4,ab=2.姹備唬鏁板紡a鐨勫钩鏂瑰姞b鐨勫钩鏂圭殑鍊
绛旓細a+b鐨勫畬鍏ㄥ钩鏂圭瓑浜巃鐨勫钩鏂瑰姞b鐨勫钩鏂瑰姞2ab,绛変簬4鐨勫钩鏂16锛宎骞虫柟鍔燽骞虫柟绛変簬16鍑2ab绛変簬16鍑4绛変簬12銆

浠佸尰鐨勭浜岄儴
绛旓細涓枃鍓у悕锛氫粊鍖2 浠佸尰2鏃ユ枃鍓у悕锛欽IN-浠-2鐢 瑙 鍙帮細TBS妗 鏈燂細鏃ヤ節妗ｏ紙鏃ユ洔鍓у満锛夋挱鏀炬椂闂达細21锛00-21锛54锛堟棩鏈椂闂达級鏀鹃佹湡闂达細2011骞4鏈17鏃-2011骞6鏈26鏃ュ墽鎯呭垎绫伙細鍖荤枟鍥 鏁帮細11鍥烇紙棣栧洖鎵╁ぇ锛夊 婕旓細骞冲窛闆勪竴鏈 閭ｉ』鐢版烦 灞卞澶ц緟缂 鍓э細妫笅浣冲瓙闊充箰鍒朵綔浜猴細蹇楃敯鍗氳嫳婕 鍛橈細...

绠渚胯绠椼 0125鑴2/5 04鑴7/8
绛旓細0.125x2/5+0.4x7/8 =1/8x2/5+2/5x7/8 =(1/8+7/8)x2/5 =1x2/5 =2/5

鏅洪殰鐢ㄦ棩璇庝箞璇
绛旓細鏃ヨ鐗圭偣 1銆佹棩璇緷闈犲姪璇嶆垨鑰呭姪鍔ㄨ瘝鐨勭矘鐫鏉ヨ〃绀烘瘡涓崟璇嶅湪鍙ヤ腑鐨勬満鑳姐傚洜姝わ紝瑕佹兂瀛﹀ソ鏃ヨ锛屾帉鎻″叾鍔╄瘝鍜屽姪鍔ㄨ瘝鐨勭敤娉曟瀬涓洪噸瑕併2銆佹棩璇殑璇嶆眹鍒嗕负瀹炶瘝鍜岃櫄璇嶄袱澶х被銆傚疄璇嶅氨鏄〃绀轰竴瀹氱殑璇箟姒傚康锛屽彲浠ュ崟鐙仛鍙ュ瓙鎴愬垎鎴栬呭仛鍙ュ瓙鎴愬垎鐨勬牳蹇冮儴鍒嗙殑璇嶇被锛涜岃櫄璇嶅氨鏄笉琛ㄧず璇箟姒傚康锛屼笉鍙互鍗曠嫭鍋氬彞瀛愭垚鍒嗭紝...

鏁板棰:1脳1/2+1/2脳1/3+1/3脳1/4+1/4脳1/5+1/5脳1/6+1/6脳1/7_鐧惧害...
绛旓細閾＄喎绾=1/(1鑴2)+1/(2鑴3)+...+1/(6鑴7)=1-1/2+1/2-1/3+...+1/6-1/7=1-1/7=6/7

1 2 6 24 120 720 ()
绛旓細1 2 6 24 120 720 (5040)鐞嗙敱锛2鏄1鐨2鍊嶏紝6鏄2鐨3鍊嶏紝24鏄6鐨4鍊嶏紝720鏄槸120鐨6鍊嶏細鎵浠ユ渶鍚庢槸720鐨7鍊 锛屾槸5040

扩展阅读：国产液相色谱 ... 1到9三角形和为17 ... 日本资生堂色谱柱 ... 7v ... a7 a7m2 ... 1-26楼层哪个最旺 ... 1-17楼层哪个最旺 ... 1-17楼最好的楼层 ... 1-26楼层口诀 ...