7、8、8、9怎麼計算得出24? 匿名使用者 1級 2015-11-06 回答

1:  8 - (7 - 9) × 82:  8 - ((7 - 9) × 8)3:  8 - (8 × (7 - 9))4:  8 - 8 ×(7 - 9)5:  8 + (8 × (9 - 7))6:  8 + 8 ×(9 - 7)7:  8 + (9 - 7) × 88:  8 + ((9 - 7) × 8)9:  (8 × (9 - 7)) + 810:  8 × (9 - 7) + 811:  (9 - 7) × 8 + 812:  ((9 - 7) × 8) + 8

7、8、8、9怎麼計算得出24? Vicky 1級 2015-11-07 回答

1: 8 - (7 - 9) × 8

2: 8 - ((7 - 9) × 8)

3: 8 - (8 × (7 - 9))

4: 8 - 8 ×(7 - 9)

5: 8 + (8 × (9 - 7))

6: 8 + 8 ×(9 - 7)

7: 8 + (9 - 7) × 8

8: 8 + ((9 - 7) × 8)

9: (8 × (9 - 7)) + 8

10: 8 × (9 - 7) + 8

11: (9 - 7) × 8 + 8

12: ((9 - 7) × 8) + 8