The following question is known as "acrobatics in mathematics". If you use conventional methods to solve it, you will feel that "the road to Shu is difficult, and it is difficult to go to the blue sky". The boundary of "one village". Please use a simple method to answer and write ideas. Put eggs in a basket. Suppose the number of eggs in the basket doubles every minute. In 10 minutes, the basket is full. So, how many minutes just put half a basket of eggs.
下面这道题被誉为"数学里的杂技"，用常规方法解答就会有"蜀道之难，难于上青天"的感觉，采取逆向思维却能达到"山重水复疑无路，柳暗花明又一村"的境界．请用简便方法解答并写出思路．往一个篮子里放鸡蛋，假定篮子里的鸡蛋数目每分钟增加1倍，10分钟时，篮子放满了．那么，多少分钟时恰好放人半篮子鸡蛋．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<result>9</result>