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Random Puzzles 


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Puzzle 5 


What is the next number in this sequence:

1 · 2 · 4 · 14 · 21 · ?

Puzzle Copyright © Kevin Stone

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Puzzle 6 


A woman had three old coins: a silver dollar, a quarter, and a dime. Each coin was a little battered and had a piece missing. She found that exactly the same fraction had broken away from each coin.

What fraction of each was missing if the value of the remaining bits of coins was now exactly one dollar in total?

For this puzzle it can be assumed that 1⁄2 a coin is worth 1⁄2 of its value.

Based on a puzzle by Henry Ernest Dudeney.

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Puzzle 7 


Can you find the country hidden in the following sentence:

A popular newspaper printed part of a page that pointed out that port officials use a pencil, not a pen, when they prepare paper updates to their port reports.

Puzzle Copyright © Kevin Stone

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Puzzle 8 


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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