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Random Puzzles 

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Puzzle 57 

You can replace the dashes with the same four-letter word, and create two new words, one that starts with ARM, and one that ends in ING.

Can you find all possible four-letter words that work?
arm----
   ----ing

Puzzle Copyright © Kevin Stone

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Puzzle 58 

Imagine a bottle recycling skip, empty other than one lonely bottle.

Every hour, on the hour, people come and put bottles into the skip.

The first hour, at noon, one person came and put a bottle in.

One hour later, two people each placed a bottle into the skip.

An hour later, four people each placed a bottle into the skip.

This doubling of people continued until 11pm, when the skip was finally full.

When was the skip exactly half full?

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Puzzle 59 

The following sentence is true.

The previous sentence is false.

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Puzzle 60 

Which of the shapes is identical to the first one?

There might be more than one.

Puzzle Copyright © Robert A. Hartmann

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