IF IT TOOK 100 MEN TO BUILD THE GREAT WALL OF CHINA HOW LONG WOULD IT TAKE 50 MEN TO BUILD IT RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

"It's nice not to see you again." Did you answer this riddle correctly?
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One wears trousers, the other pants. Did you answer this riddle correctly?
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Asia Did you answer this riddle correctly?
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The letter 'I'. Did you answer this riddle correctly?
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China Did you answer this riddle correctly?
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To see the "Great Firewall". Did you answer this riddle correctly?
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The letter 'I' Did you answer this riddle correctly?
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Seven seconds. Did you answer this riddle correctly?
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No one's tall enough to go on the good rides. Did you answer this riddle correctly?
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He is short, so he can't reach the 100th floor button. On rainy days, he can use his umbrella to poke the button. Did you answer this riddle correctly?
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Did you say three? The correct answer is twenty (29, 39, and so on). Did you answer this riddle correctly?
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A tombstone Did you answer this riddle correctly?
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Your mother. Did you answer this riddle correctly?
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Money!!! Did you answer this riddle correctly?
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Before I left, I wound the wall clock. When I returned, the change in time it showed equaled the time it took to go to my friend's and return, plus the time I spent there. But I knew the latter, because I looked at my friend's watch both when I arrived and when I left. Subtracting the time of the visit from the time I was absent from my house, and dividing by 2, I obtained the time it took me to return home. I added this time to the time my friend's watch showed when I left, and set this sum on my wall clock. Did you answer this riddle correctly?
YES  NO