24点:(1)12 5 2 13 (2)1 5 9 12 (3)3 5 12 12 (4)9 2 11 11 (5)3
1个回答

(7)2*9+(7-1)

(8)9/3*(1+7)

(9)(2 × 7 - 6) × 3

(10)2 × 9 - 2 + 8

(11)(1 × 2 + 6) × 3

(12) 5 × (5 - 1 ÷ 5)

(13)(2 - 5 + 7) × 6

(14)(3 + 9 ÷ 5) × 5

(15)(6 × (6 - 1)) - 6

(16)10 - 6 + 10 + 10

(17)3 - 7 ×(7 - 10)

(18)1 × 6 ×(7 - 3)

(19)2 × (2 + 2 × 5)

(20)2 × (2 × 7 - 2)

(21)3 × 3 + 3 × 5

(22)6 + 6 ×(6 - 3)

(23)6 × (6 + 6 - 8)

(24)2 × 4 + 7 + 9

(25)(10 × 10 - 4) ÷ 4

(26)(4 + 9 - 10) × 8