|
发表于 23-4-2008 21:41:00|来自:新加坡
|
显示全部楼层
<div class=quote><b>以下是引用<i>davidhyb</i>在2008-4-23 16:46:00的发言:</b><br>
<p>ai let me just give u a hint,  if u choose a number between 99-90 </p>
<p> </p>
<p>the number can be discribed as (90+X); so if u add the two digitals, it will be (9+X)</p>
<p> </p>
<p>and now substract from the original: (90+x)-(9+x)= 81 </p>
<p> </p>
<p>so this is math. </p>
<p> </p>
<p>end of story.</p>
<p> </p>
<p>thank you</p>
哇~~~我要做你小弟~~~老大好~~
</div><p></p> |
|