Question

四七八九怎样算才能成为24

Answer 1

（4+8）×（9-2）=24

追答

（4+8）×（9-7）=24

（9÷（7-4））×8=24

4×（7+9-8）=24

Answer 2

1:4 × (7 + 8 - 9)

2:4 × ((7 + 8) - 9)

3:4 × (7 + (8 - 9))

4:4 × (7 - 9 + 8)

5:4 × ((7 - 9) + 8)

6:4 × (7 - (9 - 8))

7:4 × (8 + 7 - 9)

8:4 × ((8 + 7) - 9)

9:4 × (8 + (7 - 9))

10:(4 + 8) × (9 - 7)

11:4 × (8 - 9 + 7)

12:4 × ((8 - 9) + 7)

13:4 × (8 - (9 - 7))

14:(7 + 8 - 9) × 4

15:((7 + 8) - 9) × 4

16:(7 + (8 - 9)) × 4

17:(7 - 9 + 8) × 4

18:((7 - 9) + 8) × 4

19:(7 - (9 - 8)) × 4

20:(8 + 4) × (9 - 7)

21:(8 ÷ (7 - 4)) × 9

22:8 ÷ (7 - 4) × 9

23:8 ÷ ((7 - 4) ÷ 9)

24:(8 + 7 - 9) × 4

25:((8 + 7) - 9) × 4

26:(8 + (7 - 9)) × 4

27:(8 - 9 + 7) × 4

28:((8 - 9) + 7) × 4

29:(8 - (9 - 7)) × 4

30:8 × (9 ÷ (7 - 4))

31:8 × 9 ÷(7 - 4)

32:(8 × 9) ÷ (7 - 4)

33:(9 - 7) × (4 + 8)

34:(9 ÷ (7 - 4)) × 8

35:9 ÷ (7 - 4) × 8

36:9 ÷ ((7 - 4) ÷ 8)

37:(9 - 7) × (8 + 4)

38:9 × (8 ÷ (7 - 4))

39:9 × 8 ÷(7 - 4)

40:(9 × 8) ÷ (7 - 4)

Answer 3

（4+8）×（9-7）=24
9÷（7-4）×8=24

Answer 4

(4+8)x(9-7)