123456....3!3! 214365....3!3! 213456....3!3! 214356....3!3! so,144.
no
70
You are close, but not exactly
72=(5!-4!*2)
This seems to be the best solution, can you reveal details?
Thanks.
details? please!
回复：details? please!
2*4!可以理解，5!仍不太明白。anyway, thank you!
回复：2*4!可以理解，5!仍不太明白。anyway, thank you!
SwiperTheFox
2010-04-14 08:21:48no