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ǰλãҳ>>9ʮ1,9ʮ4,9+7.9ʮ2,9+5,9ʮ8.9ʮ3,9+6,9...>>

9ʮ1,9ʮ4,9+7.9ʮ2,9+5,9ʮ8.9ʮ3,9+6,9...

9ʮ19ʮ49+79ʮ29+59ʮ89ʮ39+69ʮ9㷢ʲô 9ʮ19ʮ49+7 9ʮ29+59ʮ8 9ʮ39+69ʮ9 ҷ֣ÿһĺͣмıǰĶ3.3. 磺9ʮ19ʮ49+7 ĺͷֱ10,13,16.Ҳ˵...

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17Ľ153 ⣺ana1=1a2=2a3=3a4=4 ôɵa4-a3=a3-a2=a2-a1=1 ɵanΪȲУa1=1d=1 ôanͨʽΪan=n 1+2+3+4...+17ΪȲanǰ1...

ѧ˵ȲУõȲ͵Ĺʽ㡣 ûѧβӣԸһ롣磬ʮʮһ5Ȼβ11,11X5=55

¥ ڸ ֤£ȽеĽʽгڰյ7,9,2,1ʼĵʽһ㣬޽⡣Իشֻ÷dz淽ʽ㡣 --------1--------- 2-1 3-2 4-3 5-4 6-5 7-6 8-7 --------2--------- 3-1 4-2 5-3...

20064=501..............2 1+2-3-4+5+6-7-8+9+10-11-12+13+14-.....................+2005+2006 =1+2-3-4+5+6-7-8+.........+2001+2002-2003-2004+2005+2006 =-4X501+2005+2006 =2005+2006-2004 =2005+2 =2007

֪ÿʽӵֱָΪ357 193+2*18=39ǰ1919*3+39/2=399 20ʽǴ400ʼģҹ39+2߱ұ߶һ 21ұ20 Ǵ400ӵ42021*400+420/2=86...

1ʮ2ʮ3ʮ4ʮ5ʮ6ʮ7ʮ8ʮ9 =1+9+2+8+3+7+4+6+5 =10+10+10+10+5 =45 ѣȷ𰸣ֻʣȷ𰸣شûо ѣ롾ɴ𰸡IJҴĶûף׷ʡлл

0123456789ʮڡÿֻһΣ +=+=+=+=+ 0+9=1+8=2+7=2+6=4+5

99+1/10(1+2+3++9)+1010+1/10(0+1+2+9) =181+1/545 =190

Dzѷ 1+100=101 2+99=101 3+98=101 ....... 49+52=101 50+51=101 ôܹ50101 ô=50101=5050 ʽ 1+1001002=5050

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