Click to Watch in HD > Help Professor BOT to Solve 100 Doors Riddle

Watch There are 100 doors in a row, that are all initially closed. A Person walk through all doors 100 times and toggle them, if the door is open then close it and if close open it. In first walk, a person will toggle every door, So, After the First walk all Doors will be open. In second walk, a person will toggle every second door, i.e., 2nd, 4th, 6th, 8th and so on In third walk, he will toggle every third door, i.e. 3rd, 6th, 9th and so on In 100th walk, I will toggle 100th door. Which all the doors will be open after the 100th Walk? Can you solve this puzzle? For more puzzles - http://puzzlebot.org/






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