A.14 | B.20 | C.13 |
A.6 | B.4 | C.5 |
A.114 | B.82 | C.124 |
A.10 | B.12 | C.15 | D.17 |
A.4,6 | B.6,4 | C.5,5 | D.3,7 |
A.18、7 | B.7、18 | C.17、8 |
A.正五边形 | B.正六边形 | C.正七边形 |
A.(750-20×30)÷(50-20) | B.(50×30-750)÷(50-20) |
C.30-750÷(50-20) | D.30-(50×30-750)÷(50-20) |
A.15 | B.10 | C.5 |
A.兔多 | B.鸡多 | C.一样多 | D.无法判断 |