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How to be a top banana and solve GCHQ spy chiefs' fruit bowl brainteaser 


Revealed: The best way to be a high banana and clear up GCHQ spy chiefs’ fruit bowl brainteaser

  • GCHQ mentioned the fruit bowl puzzle needed to be colored utilizing simply 4 colors 
  • The take a look at was designed as an example the four-colour theorem developed in 1852
  • GCHQ hope the puzzle will assist encourage a brand new technology of codebreakers 

In accordance to GCHQ, the fruit bowl puzzle – accomplished beneath– needed to be colored utilizing simply 4 colors in order that the pear is inexperienced, the orange is orange, the apple pink and the banana yellow.

The take a look at was designed as an example the four-colour theorem developed in 1852 by Francis Guthrie, who observed that not more than 4 colors are wanted to fill in any map, so no two adjoining areas are the identical color. 

It turned the primary main theorem to be proved utilizing a pc.

It is among the puzzles in a brand new youngsters’s guide which spy chiefs hope will encourage codebreakers of the long run to hitch GCHQ.

The GCHQ fruit bowl puzzle was designed to illustrate the four-colour theorem developed in 1852 by Francis Guthrie, who noticed that no more than four colours are needed to fill in any map, so no two adjacent regions are the same colour

The GCHQ fruit bowl puzzle was designed as an example the four-colour theorem developed in 1852 by Francis Guthrie, who observed that not more than 4 colors are wanted to fill in any map, so no two adjoining areas are the identical color

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