7Â years, 10Â months ago
7Â years, 7Â months ago
i think the solution is 6/31 please check it dude
7Â years, 10Â months ago
Total black squares on chess board are 32.
For the required case, lets say you select any first square, now for selecting 2nd square, you only have 7 choices. So the correct answer should be 7/31