9522来算24点hj 数学
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【答案】 1:(9 + 5 - 2) × 2 2:((9 + 5) - 2) × 2 3:(9 + (5 - 2)) × 2 4:(9 - 2 + 5) × 2 5:((9 - 2) + 5) × 2 6:(9 - (2 - 5)) × 2 7:(5 + 9 - 2) × 2 8:((5 + 9) - 2) × 2 9:(5 + (9 - 2)) × 2 10:(5 - 2 + 9) × 2 11:((5 - 2) + 9) × 2 12:(5 - (2 - 9)) × 2