請加上運算符號(+,-,*,/ and ( ) )使算式成立
1.1 1 1 1 1=1
2.1 1 1 1 1=8
3.5 5 5 5 5=10
4.9 9 9 9 9=20
好難做的奧數題目,Help me(3)
2006-12-29 6:46 pm
回答 (11)
2006-12-29 10:38 pm
✔ 最佳答案
1. 1x1x1x1x1=1
2. 11-1-1-1
=10-1-1
=9-1
=8
3. (5/5+5/5)x5
=(1+1)x5
=2x5
=10
4.(9+9)/9+9+9
=18/9+9+9
=2+9+9
=11+9
=20
2006-12-31 1:17 am
1.1+ (1- 1)-( 1- 1)=1
2.11- 1- 1- 1=8
3.5x5-( 5+ 5+ 5)=10
4.9+9+ (9+9)/ 9=20
2.11- 1- 1- 1=8
3.5x5-( 5+ 5+ 5)=10
4.9+9+ (9+9)/ 9=20
2006-12-30 12:29 am
1. 1+1-1+1-1 = 1
2. 11-1-1-1 = 8
3. 5x5-5-5-5 = 10
4. ( 9+9 ) / 9+9+9 = 20 or __9+9__ = 20
............................................9+9+9
2. 11-1-1-1 = 8
3. 5x5-5-5-5 = 10
4. ( 9+9 ) / 9+9+9 = 20 or __9+9__ = 20
............................................9+9+9
2006-12-29 7:09 pm
1. 1 * 1 * 1 * 1 * 1 = 1
3. 5 * 5 - 5 - 5 - 5 = 10
4. 9 + 9 + [ ( 9 + 9 ) / 9 ] = 20
2006-12-29 11:11:39 補充：
2. 11 - ( 1 + 1 + 1 ) = 8
3. 5 * 5 - 5 - 5 - 5 = 10
4. 9 + 9 + [ ( 9 + 9 ) / 9 ] = 20
2006-12-29 11:11:39 補充：
2. 11 - ( 1 + 1 + 1 ) = 8
2006-12-29 7:07 pm
1.1+1-1+1-1=1
2.(11)-1-1-1=8
3.5*5-5-5-5=10
4.(9+9)/9+9+9=20
2.(11)-1-1-1=8
3.5*5-5-5-5=10
4.(9+9)/9+9+9=20
2006-12-29 7:02 pm
第一同第五題，第一樓的哥仔都答到你啦。
第二題要比d時間我，sorry
第四題呢係(9+9)/9+(9+9) =20
第二題要比d時間我，sorry
第四題呢係(9+9)/9+(9+9) =20
2006-12-29 7:02 pm
1.1-1+1-1+1=1
2.(1 1)-1-1-1=8
3.5x5-5+5-5=10
2.(1 1)-1-1-1=8
3.5x5-5+5-5=10
2006-12-29 6:52 pm
1+ 1- 1+ 1- 1=1
2006-12-29 10:57:56 補充：
(9 9 )/ 9 9 9 =20 5 * 5 - 5- 5 - 5=10
2006-12-29 10:57:56 補充：
(9 9 )/ 9 9 9 =20 5 * 5 - 5- 5 - 5=10
收錄日期: 2021-04-12 20:28:23
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