Market will only close in one of 3 ways: up, down or flat. You can only guess on each day that the market will be one of these three options. Probablility that on one day you will guess the right market close= 1/3=.333. Take that to the power of 10, .333^10 and you get .0000169. These are the odds on guessing 10 purely-directional market closes in a row.
