推 TokuchiToa :a 16!/(8!5!3!3!) 02/16 00:21
→ TokuchiToa :b 16!/(8!5!3!) 02/16 00:22
推 TokuchiToa :咦??? 02/16 00:24
推 TokuchiToa :b有錯嗎??? 02/16 00:27
→ TokuchiToa :d有錯嗎?_? 02/16 00:27
推 TokuchiToa :c是d再除以4!吧 02/16 00:29
→ playmypig :謝謝你的回答,但我也沒有答案啊,只好先給他吧.謝謝 02/16 17:00
推 TokuchiToa :因為我看上面每題都被打X啊.... 02/16 23:48