1樓：匿名使用者
1: 2 ÷ 5 × 6 × 10
2: (2 ÷ 5) × 6 × 10
3: (2 ÷ 5 × 6) × 10
4: ((2 ÷ 5) × 6) × 105: 2 ÷ 5 ×(6 × 10)
6: (2 ÷ 5) × (6 × 10)7: (2 ÷ (5 ÷ 6)) × 108: 2 ÷ (5 ÷ 6) × 10
9: 2 ÷ (5 ÷ (6 × 10))10: 2 ÷ (5 ÷ 6 ÷ 10)11:
2 ÷ ((5 ÷ 6) ÷ 10)12: (2 × (5 + 10)) - 613: 2 × (5 + 10) - 614:
2 ÷ 5 × 10 × 6
15: (2 ÷ 5) × 10 × 616: (2 ÷ 5 × 10) × 617: ((2 ÷ 5) × 10) × 618: 2 ÷ 5 ×(10 × 6)
19: (2 ÷ 5) × (10 × 6)20: (2 ÷ (5 ÷ 10)) × 621:
2 ÷ (5 ÷ 10) × 622: 2 ÷ (5 ÷ (10 × 6))23: 2 ÷ (5 ÷ 10 ÷ 6)24:
2 ÷ ((5 ÷ 10) ÷ 6)25: 2 × 6 ÷ 5 × 10
26: (2 × 6) ÷ 5 × 1027: (2 × 6 ÷ 5) × 1028:
((2 × 6) ÷ 5) × 1029: (2 × (6 ÷ 5)) × 1030: 2 × (6 ÷ 5) × 1031:
2 × (6 ÷ 5 × 10)32: 2 × ((6 ÷ 5) × 10)33: 2 × (6 ÷ (5 ÷ 10))34:
2 × 6 ÷(5 ÷ 10)
35: (2 × 6) ÷ (5 ÷ 10)36: 2 × 6 × 10 ÷ 5
37: (2 × 6) × 10 ÷ 538: (2 × 6 × 10) ÷ 539:
((2 × 6) × 10) ÷ 540: (2 × (6 × 10)) ÷ 541: 2 × (6 × 10) ÷ 542:
2 × (6 × 10 ÷ 5)43: 2 × ((6 × 10) ÷ 5)44: 2 × (6 × (10 ÷ 5))45:
2 × 6 ×(10 ÷ 5)
46: (2 × 6) × (10 ÷ 5)47: (2 + 10 ÷ 5) × 648:
(2 + (10 ÷ 5)) × 649: (2 × (10 + 5)) - 650: 2 × (10 + 5) - 651:
2 × 10 ÷ 5 × 6
52: (2 × 10) ÷ 5 × 653: (2 × 10 ÷ 5) × 654:
((2 × 10) ÷ 5) × 655: (2 × (10 ÷ 5)) × 656: 2 × (10 ÷ 5) × 657:
2 × (10 ÷ 5 × 6)58: 2 × ((10 ÷ 5) × 6)59: 2 × (10 ÷ (5 ÷ 6))60:
2 × 10 ÷(5 ÷ 6)
61: (2 × 10) ÷ (5 ÷ 6)62: 2 × 10 × 6 ÷ 5
63: (2 × 10) × 6 ÷ 564: (2 × 10 × 6) ÷ 565:
((2 × 10) × 6) ÷ 566: (2 × (10 × 6)) ÷ 567: 2 × (10 × 6) ÷ 568:
2 × (10 × 6 ÷ 5)69: 2 × ((10 × 6) ÷ 5)70: 2 × (10 × (6 ÷ 5))71:
2 × 10 ×(6 ÷ 5)
72: (2 × 10) × (6 ÷ 5)73: (5 - 2) × 10 - 674:
((5 - 2) × 10) - 675: (5 + 10) × 2 - 676: ((5 + 10) × 2) - 677:
6 × 2 ÷ 5 × 10
78: (6 × 2) ÷ 5 × 1079: (6 × 2 ÷ 5) × 1080:
((6 × 2) ÷ 5) × 1081: (6 × (2 ÷ 5)) × 1082: 6 × (2 ÷ 5) × 1083:
6 × (2 ÷ 5 × 10)84: 6 × ((2 ÷ 5) × 10)85: 6 × (2 ÷ (5 ÷ 10))86:
6 × 2 ÷(5 ÷ 10)
87: (6 × 2) ÷ (5 ÷ 10)88: 6 × (2 + 10 ÷ 5)89: 6 × (2 + (10 ÷ 5))90: 6 × 2 × 10 ÷ 5
91: (6 × 2) × 10 ÷ 592: (6 × 2 × 10) ÷ 593:
((6 × 2) × 10) ÷ 594: (6 × (2 × 10)) ÷ 595: 6 × (2 × 10) ÷ 596:
6 × (2 × 10 ÷ 5)97: 6 × ((2 × 10) ÷ 5)98: 6 × (2 × (10 ÷ 5))99:
6 × 2 ×(10 ÷ 5)
100: (6 × 2) × (10 ÷ 5)101: 6 ÷ 5 × 2 × 10
102: (6 ÷ 5) × 2 × 10103: (6 ÷ 5 × 2) × 10104:
((6 ÷ 5) × 2) × 10105: 6 ÷ 5 ×(2 × 10)106: (6 ÷ 5) × (2 × 10)107:
(6 ÷ (5 ÷ 2)) × 10108: 6 ÷ (5 ÷ 2) × 10109: 6 ÷ (5 ÷ (2 × 10))110:
6 ÷ (5 ÷ 2 ÷ 10)111: 6 ÷ ((5 ÷ 2) ÷ 10)112: 6 ÷ 5 × 10 × 2
113: (6 ÷ 5) × 10 × 2114: (6 ÷ 5 × 10) × 2115:
((6 ÷ 5) × 10) × 2116: 6 ÷ 5 ×(10 × 2)117: (6 ÷ 5) × (10 × 2)118:
(6 ÷ (5 ÷ 10)) × 2119: 6 ÷ (5 ÷ 10) × 2120: 6 ÷ (5 ÷ (10 × 2))121:
6 ÷ (5 ÷ 10 ÷ 2)122: 6 ÷ ((5 ÷ 10) ÷ 2)123: 6 × 10 × 2 ÷ 5
124: (6 × 10) × 2 ÷ 5125: (6 × 10 × 2) ÷ 5126:
((6 × 10) × 2) ÷ 5127: (6 × (10 × 2)) ÷ 5128: 6 × (10 × 2) ÷ 5129:
6 × (10 × 2 ÷ 5)130: 6 × ((10 × 2) ÷ 5)131: 6 × (10 × (2 ÷ 5))132:
6 × 10 ×(2 ÷ 5)133: (6 × 10) × (2 ÷ 5)134: 6 × (10 ÷ 5 + 2)135:
6 × ((10 ÷ 5) + 2)136: 6 × 10 ÷ 5 × 2
137: (6 × 10) ÷ 5 × 2138: (6 × 10 ÷ 5) × 2139:
((6 × 10) ÷ 5) × 2140: (6 × (10 ÷ 5)) × 2141: 6 × (10 ÷ 5) × 2142:
6 × (10 ÷ 5 × 2)143: 6 × ((10 ÷ 5) × 2)144: 6 × (10 ÷ (5 ÷ 2))145:
6 × 10 ÷(5 ÷ 2)146: (6 × 10) ÷ (5 ÷ 2)147: 10 × 2 ÷ 5 × 6
148: (10 × 2) ÷ 5 × 6149: (10 × 2 ÷ 5) × 6150:
((10 × 2) ÷ 5) × 6151: (10 × (2 ÷ 5)) × 6152: 10 × (2 ÷ 5) × 6153:
10 × (2 ÷ 5 × 6)154: 10 × ((2 ÷ 5) × 6)155: 10 × (2 ÷ (5 ÷ 6))156:
10 × 2 ÷(5 ÷ 6)157: (10 × 2) ÷ (5 ÷ 6)158: 10 × 2 × 6 ÷ 5
159: (10 × 2) × 6 ÷ 5160: (10 × 2 × 6) ÷ 5161:
((10 × 2) × 6) ÷ 5162: (10 × (2 × 6)) ÷ 5163: 10 × (2 × 6) ÷ 5164:
10 × (2 × 6 ÷ 5)165: 10 × ((2 × 6) ÷ 5)166: 10 × (2 × (6 ÷ 5))167:
10 × 2 ×(6 ÷ 5)168: (10 × 2) × (6 ÷ 5)169: (10 + 5) × 2 - 6170:
((10 + 5) × 2) - 6171: (10 × (5 - 2)) - 6172: 10 × (5 - 2) - 6173:
(10 ÷ 5 + 2) × 6174: ((10 ÷ 5) + 2) × 6175: 10 ÷ 5 × 2 × 6
176: (10 ÷ 5) × 2 × 6177: (10 ÷ 5 × 2) × 6178:
((10 ÷ 5) × 2) × 6179: 10 ÷ 5 ×(2 × 6)180: (10 ÷ 5) × (2 × 6)181:
(10 ÷ (5 ÷ 2)) × 6182: 10 ÷ (5 ÷ 2) × 6183: 10 ÷ (5 ÷ (2 × 6))184:
10 ÷ (5 ÷ 2 ÷ 6)185: 10 ÷ ((5 ÷ 2) ÷ 6)186: 10 ÷ 5 × 6 × 2
187: (10 ÷ 5) × 6 × 2188: (10 ÷ 5 × 6) × 2189:
((10 ÷ 5) × 6) × 2190: 10 ÷ 5 ×(6 × 2)191: (10 ÷ 5) × (6 × 2)192:
(10 ÷ (5 ÷ 6)) × 2193: 10 ÷ (5 ÷ 6) × 2194: 10 ÷ (5 ÷ (6 × 2))195:
10 ÷ (5 ÷ 6 ÷ 2)196: 10 ÷ ((5 ÷ 6) ÷ 2)197: 10 × 6 × 2 ÷ 5
198: (10 × 6) × 2 ÷ 5199: (10 × 6 × 2) ÷ 5200:
((10 × 6) × 2) ÷ 5201: (10 × (6 × 2)) ÷ 5202: 10 × (6 × 2) ÷ 5203:
10 × (6 × 2 ÷ 5)204: 10 × ((6 × 2) ÷ 5)205: 10 × (6 × (2 ÷ 5))206:
10 × 6 ×(2 ÷ 5)207: (10 × 6) × (2 ÷ 5)208: 10 × 6 ÷ 5 × 2
209: (10 × 6) ÷ 5 × 2210: (10 × 6 ÷ 5) × 2211:
((10 × 6) ÷ 5) × 2212: (10 × (6 ÷ 5)) × 2213: 10 × (6 ÷ 5) × 2214:
10 × (6 ÷ 5 × 2)215: 10 × ((6 ÷ 5) × 2)216: 10 × (6 ÷ (5 ÷ 2))217:
10 × 6 ÷(5 ÷ 2)218: (10 × 6) ÷ (5 ÷ 2)
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水壓的常用單位有幾種？用英文怎樣表示？它們之間的換算關係是什
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在1,2,32019這2019個自然數
johnson 喧 可用排列組合的知識解 可以把這2002個數都看作四位數,如12可以看作0012.除了千位只能是0,1,2以外,百十個位都各有0,1,2,3,4,5,6,7,8,9十個數可填.分三種情況 1.千位為0.若剩餘三位中有1個1，則有3 9 9種 2個1，有3 9種 3個1，有1種 2....