ldcf.net
当前位置:首页 >> 10道24点难题 >>

10道24点难题

(1)5+9+8+2 (2)4×6+5-5 (3)4×7-3-1 (4)6×8÷8×4 (5)(2×5)+(2×7)

(2+10÷7)x7=24

规则:用加减乘除四则运算,这四个数字只能用一遍,使得数等于24. 来试试吧、 (1) 4 4 10 10 (2) 1 3 4 6 (3) 5 1 5 5 (4) 9 6 9 10 (5) 3 3 7 7 (6) 8 9 2 6 (7) 6,-3,1,9 如:[6+(-3)]×(9-1)=24 6-[1+(-3)]×9=24 (8)3,4,-6,10...

1 1 1 1 无解! 1 1 1 2 无解! 1 1 1 3 无解! 1 1 1 4 无解! 1 1 1 5 无解! 1 1 1 6 无解! 1 1 1 7 无解! 1 1 1 8 8*(1+1+1) 1 1 1 9 无解! 1 1 1 10 无解! 1 1 1 11 (1+1)*(1+11) 1 1 1 12 (1+1)*1*12 1 1 1 13 (1+1)*(13-1) 1 1 2 2 ...

2.5.5.10 答案 1: (5 - 2 ÷ 10) × 5 2: (5 - (2 ÷ 10)) × 5 3: 5 × (5 - 2 ÷ 10) 4: 5 × (5 - (2 ÷ 10)) 2.3.4.5 答案 1: 2 × (3 + 5 + 4) 2: 2 × ((3 + 5) + 4) 3: 2 × (3 + (5 + 4)) 4: 2 × (3 + 4 + 5) 5: 2 × ((3 + 4) + 5) 6: 2 × (3 + (4 ...

(2 + 6 ÷ 9) × 9 = 24 (2 + 4 ÷ 10) × 10 = 24 8 ÷(3 - 8 ÷ 3)= 24 12 ÷ (7 - 13 ÷ 2)= 24 12 ÷ (3 - 5 ÷ 2) = 24 6 ÷ (1 - 6 ÷ 8) = 24 6 ÷ (1 - 3 ÷ 4) = 24

2.5.5.10 答案 1: (5 - 2 ÷ 10) × 5 2: (5 - (2 ÷ 10)) × 5 3: 5 × (5 - 2 ÷ 10) 4: 5 × (5 - (2 ÷ 10)) 2.3.4.5 答案 1: 2 × (3 + 5 + 4) 2: 2 × ((3 + 5) + 4) 3: 2 × (3 + (5 + 4)) 4: 2 × (3 + 4 + 5) 5: 2 × ((3 + 4) + 5) 6: 2 × (3 + (4 ...

1:6 - (8 - 10) × 92:6 - ((8 - 10) × 9)3:6 - (9 × (8 - 10))4:6 - 9 ×(8 - 10)5:6 + (9 × (10 - 8))6:6 + 9 ×(10 - 8)7:6 + (10 - 8) × 98:6 + ((10 - 8) × 9)9:(9 × (10 - 8)) + 610:9 × (10 - 8) + 611:(10 - 8) × 9 + 612:((10 - 8) × 9) + 6

(13,13,2,9) (9+13)÷2+13=22÷2+13=11+13=24 (10,10,11,5) (10+11×10)÷5=120÷5=24 (5,7,9,11) (5+7)X(11-9)=12X2=24

照相机成倒立缩小的实像,图中的a点物距大于二倍焦距,成倒立缩小的实像;放大镜成正立放大的虚像,图中的d点物距小于焦距,成正立放大的虚像.故答案为:a、放大镜.

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com