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Random Puzzles 


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Puzzle 1 


What four-digit number has Digit 1 three smaller than Digit 4, which is one more than Digit 2, which is twice Digit 3, which is one more than one third of Digit 4?

Puzzle Copyright © Kevin Stone

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Puzzle 2 


Using a tap, a seven gallon container, and an eleven gallon container, can you measure exactly 9 gallons?

You may empty the containers down the drain.

Puzzle Copyright © Kevin Stone

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Puzzle 3 


Starting in the bottom left corner and moving either up or right, how many ways are there to get to the top right corner and make a total of 10?

Note: this puzzle is not interactive, and the numbers cannot be clicked.

Puzzle Copyright © Kevin Stone

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Puzzle 4 


Complete the fifth circle with the correct dots.

Puzzle Copyright © Kevin Stone

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