Question

9,7,8,2.怎样才能使得数等于24?

Answer 1

1:(7 + 9) × 2 - 8

2:((7 + 9) × 2) - 8

3:(9 + 7) × 2 - 8

4:((9 + 7) × 2) - 8

5:(2 × (7 + 9)) - 8

6:2 × (7 + 9) - 8

7:(2 × (9 + 7)) - 8

8:2 × (9 + 7) - 8