What four periodic elements, when...

Riddle: Shiny like a silver, denser than lead, pricier than gold, could stop a bullet, if I wanted to. What am I?

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Answer: Osmium

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Riddle: What’s the loneliest of all physics concepts?

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Answer: The singularity

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Riddle: Adivina quién soy; Cuando voy, vengo, Y cuando vengo, voy.

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Answer: El cangrejo

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Riddle: A huge mythical animal said to resemble a whale.

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Answer: Leviathan.

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Riddle: A king decided to let a prisoner try to escape the prison with his life. The king placed 2 marbles in a jar was glued to a table. One of the marbles was supposed to be black, and one was supposed to be blue. If the prisoner could pick the blue marble, he would escape the prison with his life. If he picked the black marble, he would be executed. However, the king was very mean, and he wickedly placed 2 black marbles in the jars and no blue marbles. The prisoner witnessed the king only putting 2 black marbles in the jars. If the jar was not see-through and glued to the table and the prisoner was mute so he could not say anything, how did he escape with his life?

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Answer: The prisoner grabbed one of the marbles from the jar and concealed it in his hand. He then swallowed it, and picked up the other marble and showed everyone. The marble was black, and since the other marble was swallowed, it was assumed to be the blue one. So the mean king had to set him free.

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Riddle: A man is locked in a room with a serial killer. The killer says that he will allow the man to escape if he can beat him in the serial killer's favorite game. If the man loses, the serial killer will kill him. The rules of the game are as follows: 1. Each man must take turns placing a coin on a perfectly round table. 2. The coins must lay flat. 3. The coins cannot overlap each other. 4. The coins cannot hang off the edge of the table at all. 5. The first man to run out of room to place a coin on the table loses. The serial killer is very confident in his ability to win at this game, so he lets the man go first. What can the man do to guarantee that he wins the game?

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Answer: The man must first place a coin in the center of the table. He then must replicate every move the serial killer makes on the opposite side of the table. Eventually the serial killer will run out of places to place a coin and the man will win.

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