Logic Puzzles

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DEFENDING, CALMNESS, SIGHING, CANOPY and STUMBLE. What do these words have in common?
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Find four numbers, the sum of which is 45, so that if 2 is added to the first number, 2 is subtracted from the second number, the third number is multiplied by 2 and the fourth number is divided by 2, then the four numbers so produced are all the same. What are the four numbers?
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The following numbers share a unique property: 1961 6088 6119 8118 6699 6009. What is it?
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If you have two quarters on a table touching each other, how can you move one of the quarters without touching it? You are only allowed to touch one quarter but not move it. You cant touch the quarter that you move. You want to get at least enough room between the two quarters to insert another coin between the two quarters.
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You are in a room that is completely bricked in on all four sides, including the cieling and floor. You have nothing but a mirror and a wooden table in the room with you. How do you get out?
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George was cleaning the windows on the eighteenth floor of an office block when there was a massive power failure. The electric hoist on his platform was immoblized. So how did he manage to get down before the power was restored?
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