1 3 9 10怎么算等24
问题描述:
1 3 9 10怎么算等24
答
1: (1 + 10) × 3 - 92: ((1 + 10) × 3) - 93: (3 × (1 + 10)) - 94: 3 × (1 + 10) - 95: (3 × (10 + 1)) - 96: 3 × (10 + 1) - 97: (10 + 1) × 3 - 98: ((10 + 1) × 3) - 9