1．What number has nothing left if you take a half from it？
什么数字拿走一半就什么都不剩了？
2．What number is like a peacock？
什么数字像孔雀一样？
3．What room has no walls，no doors， no windows，and no one to live in？
什么房间没有墙，没有门窗，也没有人住？
Keys：
1．The number is 8， because only 0 is left whether you take away the top half or the bottom half．
是数字8，因为不管你拿掉它的上面一半还是下面一半，剩下的都是零。
2．The number is 9， because it's 0 without its tail and likewise，a peacock is nothing without its tail．
是数字9，因为9 没有尾巴就成了零，同样，孔雀没有尾巴也一无是处。
3．A mushroom．
是蘑菇。脑筋急转弯大全及答案