1,3,9,10;1,5,5,5;2,7,10,10;2,7,8,8如何算24点答:共有2种方法!(1+10)*3-9=24 (10+1)*3-9=24 共有2种方法!(5-1/5)*5=24 5*(5-1/5)=24 共有6种方法!(2-10)*(7-10)=24 (7+10)*2-10=24 (7-10)*(2-10)=24 (10-2)*(10-7)=24 (10+7)*2-10=24 (10-7)*(10-2)=24 共有12种方法!(2-7+8)*8=24...
算24点3,7,9,13, 1,4,4,5 6,8,8,9, 2,8,9,13答:3, 7, 9, 3的24点答案:1: 3 + 7 × 9 ÷ 3 2: 3 + (7 × 9) ÷ 3 3: 3 + (7 × 9 ÷ 3)4: 3 + ((7 × 9) ÷ 3)5: 3 + (7 × (9 ÷ 3))6: 3 + 7 ×(9 ÷ 3)7: 3 × 7 + 9 ÷ 3 8: (3 × 7) + 9 ÷ 3 9: 3 × ...