题目

24点.1,2,3,9
方法越多越好!请尽快给出答案.

提问时间：2020-09-05

答案

1: 1 × (2 × (3 + 9)) 2: 1 × 2 ×(3 + 9) 3: (1 × 2) × (3 + 9) 4: (1 + 2) × 9 - 3 5: ((1 + 2) × 9) - 3 6: (1 - 2 + 9) × 3 7: ((1 - 2) + 9) × 3 8: (1 - (2 - 9)) × 3 9: 1 × (2 × (9 + 3)) 10: 1 × 2 ×(9 + 3) 11: (1 × 2) × (9 + 3) 12: (1 × 3 + 9) × 2 13: ((1 × 3) + 9) × 2 14: (1 × (3 + 9)) × 2 15: 1 × (3 + 9) × 2 16: 1 × ((3 + 9) × 2) 17: (1 + 9 - 2) × 3 18: ((1 + 9) - 2) × 3 19: (1 + (9 - 2)) × 3 20: (1 × 9 + 3) × 2 21: ((1 × 9) + 3) × 2 22: (1 × (9 + 3)) × 2 23: 1 × (9 + 3) × 2 24: 1 × ((9 + 3) × 2) 25: 2 × (1 × 3 + 9) 26: 2 × ((1 × 3) + 9) 27: 2 × (1 × (3 + 9)) 28: 2 × 1 ×(3 + 9) 29: (2 × 1) × (3 + 9) 30: 2 ÷ 1 ×(3 + 9) 31: (2 ÷ 1) × (3 + 9) 32: 2 ÷ (1 ÷ (3 + 9)) 33: (2 + 1) × 9 - 3 34: ((2 + 1) × 9) - 3 35: 2 × (1 × 9 + 3) 36: 2 × ((1 × 9) + 3) 37: 2 × (1 × (9 + 3)) 38: 2 × 1 ×(9 + 3) 39: (2 × 1) × (9 + 3) 40: 2 ÷ 1 ×(9 + 3) 41: (2 ÷ 1) × (9 + 3) 42: 2 ÷ (1 ÷ (9 + 3)) 43: 2 × (3 + 1 × 9) 44: 2 × (3 + (1 × 9)) 45: 2 × (3 × 1 + 9) 46: 2 × ((3 × 1) + 9) 47: 2 × (3 ÷ 1 + 9) 48: 2 × ((3 ÷ 1) + 9) 49: (2 × (3 + 9)) × 1 50: 2 × (3 + 9) × 1 51: 2 × (3 + 9 × 1) 52: 2 × ((3 + 9) × 1) 53: 2 × (3 + (9 × 1)) 54: (2 × (3 + 9)) ÷ 1 55: 2 × (3 + 9) ÷ 1 56: 2 × (3 + 9 ÷ 1) 57: 2 × ((3 + 9) ÷ 1) 58: 2 × (3 + (9 ÷ 1)) 59: 2 × (9 + 1 × 3) 60: 2 × (9 + (1 × 3)) 61: 2 × (9 × 1 + 3) 62: 2 × ((9 × 1) + 3) 63: 2 × (9 ÷ 1 + 3) 64: 2 × ((9 ÷ 1) + 3) 65: (2 × (9 + 3)) × 1 66: 2 × (9 + 3) × 1 67: 2 × (9 + 3 × 1) 68: 2 × ((9 + 3) × 1) 69: 2 × (9 + (3 × 1)) 70: (2 × (9 + 3)) ÷ 1 71: 2 × (9 + 3) ÷ 1 72: 2 × (9 + 3 ÷ 1) 73: 2 × ((9 + 3) ÷ 1) 74: 2 × (9 + (3 ÷ 1)) 75: 3 × (1 - 2 + 9) 76: 3 × ((1 - 2) + 9) 77: 3 × (1 - (2 - 9)) 78: (3 + 1 × 9) × 2 79: (3 + (1 × 9)) × 2 80: 3 × (1 + 9 - 2) 81: 3 × ((1 + 9) - 2) 82: 3 × (1 + (9 - 2)) 83: (3 × 1 + 9) × 2 84: ((3 × 1) + 9) × 2 85: (3 ÷ 1 + 9) × 2 86: ((3 ÷ 1) + 9) × 2 87: (3 + 9) × 1 × 2 88: (3 + 9 × 1) × 2 89: ((3 + 9) × 1) × 2 90: (3 + (9 × 1)) × 2 91: (3 + 9) × (1 × 2) 92: (3 + 9) ÷ 1 × 2 93: (3 + 9 ÷ 1) × 2 94: ((3 + 9) ÷ 1) × 2 95: (3 + (9 ÷ 1)) × 2 96: (3 + 9) ÷ (1 ÷ 2) 97: 3 × (9 + 1 - 2) 98: 3 × ((9 + 1) - 2) 99: 3 × (9 + (1 - 2)) 100: 3 × 9 -(1 + 2) 101: (3 × 9) - (1 + 2) 102: 3 × 9 - 1 - 2 103: (3 × 9) - 1 - 2 104: (3 × 9 - 1) - 2 105: ((3 × 9) - 1) - 2 106: (3 + 9) × 2 × 1
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