Building Puzzle

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?




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Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

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A plane crashed between the border of Mexico and America. Where do you bury the survivors?

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.