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Mathematical Puzzles


Difficulty: EasyPuzzle 41

Puzzle IconYou 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?

[Ref: ZUVM] © Kevin Stone

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Difficulty: MediumPuzzle 42

Which square, which circle, and which triangle has the closest area to the doughnut shape on the left?

The drawings are to scale, so you might be able to judge it, as well as working the actual areas out.

Puzzle Image

[Ref: ZKRC] © Kevin Stone

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Difficulty: MediumPuzzle 43

Puzzle Icon4 shepherds were watching over their flocks and they were commenting on how many sheep they each had.

If Alan had three more sheep, then he'd have one less sheep than Brian.

Whereas Dave has the same number as the other three shepherds put together.

If Charles had three less sheep, he'd have exactly treble the number of Alan.

If they were evenly distributed they'd each have eleven sheep.

How man sheep does Alan have?

[Ref: ZIZG] © Kevin Stone

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Difficulty: EasyPuzzle 44

Puzzle IconMove from letter to letter and collect the necessary letters for FIND (in any order).

How many different routes can you take if you always start with the central F and always move either horizontally or vertically?

      D
    N I D
  D N D I D
D I N F I I N
  I N D D I
    D I D
      N

[Ref: ZMHZ] © Kevin Stone

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