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Puzzle 197 


    10
   100
 1,000
10,000

Which number comes after 10,000?

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Puzzle 198 


You have a very large number of generic plastic building blocks, each in the shape of a cube.

Think about how many cubes you would need in order to construct a giant cube with 16 small cubes along each edge.

If you were to then remove the outside layer, how many small cubes would you have removed?

Puzzle Copyright © Kevin Stone

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Puzzle 199 


Each of the following sets of letters can be made into a real word by adding three letters to the beginning, and the same three letters in the same order to the end.
ertainm iscove row ioxid rocos
For example:

   iperspir
   ??? + iperspir + ???
   ant + iperspir + ant
   antiperspirant

Puzzle Copyright © Elliott Line
This puzzle appeared in Mensa's EnigmaSig (203.08) and is used with permission.

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Puzzle 200 


What value of X makes the following correct:

Puzzle Copyright © Kevin Stone

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