Here's the question you clicked on:
parakhnitish
There are seven holes in a line. A fox can move left or right along the holes and you can watch only one hole per day. So in how many days can you catch the fox?
The probability is 1:7, but it doesn't mean that you catch the fox one time in a week. It can past several week and perhaps you cannot see the fox. Or if you are lucky you can catch the fox the first day.