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Difficulty: EasyPuzzle 281

What is represented by this BrainBat?

heart heart heart

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[Ref: ZNIH] Copyrighted. 



Difficulty: EasyPuzzle 282

I have a machine which has four sequential cog wheels in constant mesh.

The largest cog has 81 teeth and the others have 52, 36 and 20 respectively.

What is the fewest number of revolutions the largest cog must make so that all of the cogs are back in their starting position?

?

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[Ref: ZAVS] © Kevin Stone 



Difficulty: EasyPuzzle 283

What is represented by this BrainBat?

STEPPETSPETS

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[Ref: ZNKQ] Copyrighted. 



Difficulty: MediumPuzzle 284

In the following sum the digits 0 to 9 have all been used, O = Odd, E = Even, zero is even and the top row's digits add to 9. Can you determine each digit?

?

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[Ref: ZVZB] © Kevin Stone 


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