不对:
应是:
奇奇偶偶5X4X5X4=400
奇偶偶奇5X5X4X4=400
奇偶奇偶5X5X4X4=400
偶偶奇奇4X4X5X4=320
偶奇偶奇4X5X4X4=320
偶奇奇偶4X5X4X4=320
共有400×3+320×3=1200+960=2160(个)
祝你开心
不对:
应是:
奇奇偶偶5X4X5X4=400
奇偶偶奇5X5X4X4=400
奇偶奇偶5X5X4X4=400
偶偶奇奇4X4X5X4=320
偶奇偶奇4X5X4X4=320
偶奇奇偶4X5X4X4=320
共有400×3+320×3=1200+960=2160(个)
祝你开心