1樓：卻是舊識相識
1: 2 + 3 × 6 + 4
2: (2 + 3 × 6) + 4
3: (2 + (3 × 6)) + 44: 2 + (3 × 6) + 4
5: 2 + (3 × 6 + 4)
6: 2 + ((3 × 6) + 4)7: 2 + 4 + 3 × 6
8: (2 + 4) + 3 × 6
9: 2 + (4 + 3 × 6)
10: 2 + (4 + (3 × 6))11: 2 + 4 +(3 × 6)
12: (2 + 4) + (3 × 6)13: (2 + 4) × 3 + 6
14: ((2 + 4) × 3) + 615: 2 + 4 + 6 × 3
16: (2 + 4) + 6 × 3
17: 2 + (4 + 6 × 3)
18: 2 + (4 + (6 × 3))19: 2 + 4 +(6 × 3)
20: (2 + 4) + (6 × 3)21: 2 × (4 × (6 - 3))22: 2 × 4 ×(6 - 3)
23: (2 × 4) × (6 - 3)24: 2 + 6 × 3 + 4
25: (2 + 6 × 3) + 4
26: (2 + (6 × 3)) + 427: 2 + (6 × 3) + 4
28: 2 + (6 × 3 + 4)
29: 2 + ((6 × 3) + 4)30: 2 × 6 + 3 × 4
31: (2 × 6) + 3 × 4
32: 2 × 6 +(3 × 4)
33: (2 × 6) + (3 × 4)34: (2 × (6 - 3)) × 435: 2 × (6 - 3) × 4
36: 2 × ((6 - 3) × 4)37: 2 × 6 + 4 × 3
38: (2 × 6) + 4 × 3
39: 2 × 6 +(4 × 3)
40: (2 × 6) + (4 × 3)41: (2 × 6 - 4) × 3
42: ((2 × 6) - 4) × 343: (3 - 2) × 4 × 6
44: ((3 - 2) × 4) × 645: (3 - 2) × (4 × 6)46: (3 × (2 + 4)) + 647: 3 × (2 + 4) + 6
48: (3 - 2) × 6 × 4
49: ((3 - 2) × 6) × 450: (3 - 2) × (6 × 4)51: 3 × (2 × 6 - 4)
52: 3 × ((2 × 6) - 4)53: (3 × (4 + 2)) + 654: 3 × (4 + 2) + 6
55: 3 × 4 + 2 × 6
56: (3 × 4) + 2 × 6
57: 3 × 4 +(2 × 6)
58: (3 × 4) + (2 × 6)59: 3 × (4 - 2 + 6)
60: 3 × ((4 - 2) + 6)61: 3 × (4 - (2 - 6))62: 3 × (4 ÷ 2 + 6)
63: 3 × ((4 ÷ 2) + 6)64: 3 × (4 + 6 - 2)
65: 3 × ((4 + 6) - 2)66: 3 × (4 + (6 - 2))67: 3 × 4 + 6 × 2
68: (3 × 4) + 6 × 2
69: 3 × 4 +(6 × 2)
70: (3 × 4) + (6 × 2)71: (3 + 6 ÷ 2) × 4
72: (3 + (6 ÷ 2)) × 473: 3 × 6 + 2 + 4
74: (3 × 6) + 2 + 4
75: (3 × 6 + 2) + 4
76: ((3 × 6) + 2) + 477: 3 × 6 +(2 + 4)
78: (3 × 6) + (2 + 4)79: 3 × (6 - 2 + 4)
80: 3 × ((6 - 2) + 4)81: 3 × (6 - (2 - 4))82: 3 × (6 × 2 - 4)
83: 3 × ((6 × 2) - 4)84: 3 × 6 + 4 + 2
85: (3 × 6) + 4 + 2
86: (3 × 6 + 4) + 2
87: ((3 × 6) + 4) + 288: 3 × 6 +(4 + 2)
89: (3 × 6) + (4 + 2)90: 3 × (6 + 4 - 2)
91: 3 × ((6 + 4) - 2)92: 3 × (6 + (4 - 2))93: 3 × (6 + 4 ÷ 2)
94: 3 × (6 + (4 ÷ 2))95: 4 + 2 + 3 × 6
96: (4 + 2) + 3 × 6
97: 4 + (2 + 3 × 6)
98: 4 + (2 + (3 × 6))99: 4 + 2 +(3 × 6)
100: (4 + 2) + (3 × 6)101: (4 + 2) × 3 + 6102: ((4 + 2) × 3) + 6103: 4 + 2 + 6 × 3
104: (4 + 2) + 6 × 3105: 4 + (2 + 6 × 3)106: 4 + (2 + (6 × 3))107: 4 + 2 +(6 × 3)
108: (4 + 2) + (6 × 3)109: (4 - 2 + 6) × 3110:
((4 - 2) + 6) × 3111: (4 - (2 - 6)) × 3112: 4 × (2 × (6 - 3))113:
4 × 2 ×(6 - 3)
114: (4 × 2) × (6 - 3)115: (4 ÷ 2 + 6) × 3116: ((4 ÷ 2) + 6) × 3117: 4 × 3 + 2 × 6
118: (4 × 3) + 2 × 6119: 4 × 3 +(2 × 6)
120: (4 × 3) + (2 × 6)121: (4 × (3 - 2)) × 6122:
4 × (3 - 2) × 6123: 4 × ((3 - 2) × 6)124: (4 ÷ (3 - 2)) × 6125:
4 ÷ (3 - 2) × 6126: 4 ÷ ((3 - 2) ÷ 6)127: 4 + 3 × 6 + 2
128: (4 + 3 × 6) + 2129: (4 + (3 × 6)) + 2130:
4 + (3 × 6) + 2131: 4 + (3 × 6 + 2)132: 4 + ((3 × 6) + 2)133:
4 × 3 + 6 × 2
134: (4 × 3) + 6 × 2135: 4 × 3 +(6 × 2)
136: (4 × 3) + (6 × 2)137: 4 × (3 + 6 ÷ 2)138:
4 × (3 + (6 ÷ 2))139: (4 + 6 - 2) × 3140: ((4 + 6) - 2) × 3141:
(4 + (6 - 2)) × 3142: 4 × (6 ÷ 2 + 3)143: 4 × ((6 ÷ 2) + 3)144:
4 + 6 × 3 + 2
145: (4 + 6 × 3) + 2146: (4 + (6 × 3)) + 2147:
4 + (6 × 3) + 2148: 4 + (6 × 3 + 2)149: 4 + ((6 × 3) + 2)150:
(4 × (6 - 3)) × 2151: 4 × (6 - 3) × 2152: 4 × ((6 - 3) × 2)153:
4 × (6 × (3 - 2))154: 4 × 6 ×(3 - 2)
155: (4 × 6) × (3 - 2)156: 4 × (6 ÷ (3 - 2))157: 4 × 6 ÷(3 - 2)
158: (4 × 6) ÷ (3 - 2)159: 6 × 2 + 3 × 4
160: (6 × 2) + 3 × 4161: 6 × 2 +(3 × 4)
162: (6 × 2) + (3 × 4)163: (6 ÷ 2 + 3) × 4164:
((6 ÷ 2) + 3) × 4165: 6 + (2 + 4) × 3166: 6 + ((2 + 4) × 3)167:
(6 - 2 + 4) × 3168: ((6 - 2) + 4) × 3169: (6 - (2 - 4)) × 3170:
6 × 2 + 4 × 3
171: (6 × 2) + 4 × 3172: 6 × 2 +(4 × 3)
173: (6 × 2) + (4 × 3)174: (6 × 2 - 4) × 3175:
((6 × 2) - 4) × 3176: 6 + (3 × (2 + 4))177: 6 + 3 ×(2 + 4)
178: (6 - 3) × 2 × 4179: ((6 - 3) × 2) × 4180: (6 - 3) × (2 × 4)181: 6 × 3 + 2 + 4
182: (6 × 3) + 2 + 4183: (6 × 3 + 2) + 4184: ((6 × 3) + 2) + 4185: 6 × 3 +(2 + 4)
186: (6 × 3) + (2 + 4)187: (6 × (3 - 2)) × 4188:
6 × (3 - 2) × 4189: 6 × ((3 - 2) × 4)190: (6 ÷ (3 - 2)) × 4191:
6 ÷ (3 - 2) × 4192: 6 ÷ ((3 - 2) ÷ 4)193: 6 + (3 × (4 + 2))194:
6 + 3 ×(4 + 2)
195: (6 - 3) × 4 × 2196: ((6 - 3) × 4) × 2197: (6 - 3) × (4 × 2)198: 6 × 3 + 4 + 2
199: (6 × 3) + 4 + 2200: (6 × 3 + 4) + 2201: ((6 × 3) + 4) + 2202: 6 × 3 +(4 + 2)
203: (6 × 3) + (4 + 2)204: 6 + (4 + 2) × 3205:
6 + ((4 + 2) × 3)206: (6 + 4 - 2) × 3207: ((6 + 4) - 2) × 3208:
(6 + (4 - 2)) × 3209: (6 + 4 ÷ 2) × 3210: (6 + (4 ÷ 2)) × 3211:
6 × (4 × (3 - 2))212: 6 × 4 ×(3 - 2)
213: (6 × 4) × (3 - 2)214: 6 × (4 ÷ (3 - 2))215: 6 × 4 ÷(3 - 2)
216: (6 × 4) ÷ (3 - 2)
數學 甲 乙 丙 丁數的比是1 3 5 7,它們之間相差十分之一,求數的積
總合 1 10 3 16 1 16 4 5甲4 5x1 16 1 20 乙4 5x3 16 3 20 丙4 5x5 16 1 4 丁4 5x7 16 7 20 積 1 20x3 20x1 4x7 20 21 32000 設甲為x，則乙為3x，丙為5x，丁為7x。3x x 1 10，x 1 20 x ...
高數導數證明題用定義證明,高數導數證明題用定義證明
代入x1 x2 0 得到f 0 f 0 f 0 f 0 0 f 0 lim x 0 f 0 x f 0 x lim x 0 f x x a任取x r，專lim x 0 f x x f x x lim x 0 f x f x f x x lim x 0 f x x a f x a 令f x f x a...
在100以內 有自然數,它們各有因數,這自然數
首先這一個數要有12個約數，那麼它不是完全平方數，其次，它的平方根之前要有6個約數，因此，這個數至少要有約數1 2 3 4 6，再加另外一個約數，比如5 6 7 8 9.1 2 3 4 6的最小公倍數是12 因此，這四個數就是12 5 60 12 7 84 12 6 72 12 8 96 因此，這四...