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More ways to get Braingle...

Jim and Joe

Science brain teasers require understanding of the physical or biological world and the laws that govern it.

 

Puzzle ID:#48714
Fun:*** (2.65)
Difficulty:* (0.88)
Category:Science
Submitted By:Oxiproxd9t*****

 

 

 



Jim and Joe were close brothers until Jim graduated from Yale and became a renowned scientist who made millions. Not wanting to be outdone, Joe invited Jim over to a mansion that he claimed was his. He showed Jim many wonderful things inside the house one of which was a golden statue.

"This was a little gift from a friend of mine," Joe said, rapping on it with his fist, "It's made out of pure gold. See? Even my powerful fist can't make a dent in it."

"I have to say, this is all impressive," Jim admitted, "but I know this is all fake, Joe."

How did Jim know Joe was lying?


Answer

If Joe's statue was made of pure gold, it would've dented easily from Joe's fist. Pure gold scores only a 2.5 - 4 on the Mohs scale, and is easy to mold in your hands.
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