70

jinjing 2010-04-14 17:33:29 ( reads)

I do question by heart.So a lot mistakes.Thank you.This question is not good question,I have to use pen and paper.If the question is changed to even number can't meet together,it is good question,and my answer is right.

跟帖(8)

SwiperTheFox

2010-04-15 09:55:41

You are close, but not exactly

jinjing

2010-04-15 13:26:38

72=(5!-4!*2)

SwiperTheFox

2010-04-16 09:44:10

This seems to be the best solution, can you reveal details?

jinjing

2010-04-17 05:17:39

Thanks.

皆兄弟也

2010-04-16 12:19:17

details? please!

jinjing

2010-04-16 16:00:53

回复：details? please!

皆兄弟也

2010-04-16 20:55:59

2*4!可以理解，5!仍不太明白。anyway, thank you!

jinjing

2010-04-17 05:43:11

回复：2*4!可以理解，5!仍不太明白。anyway, thank you!