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Mathematical Puzzles


Difficulty: EasyPuzzle 1

Puzzle IconCan you find a number...

...whose double exceeds its quarter by 7.

[Ref: ZHRW] Copyright © Kevin Stone

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Direct Link: www.brainbashers.com?ZHRW


Difficulty: MediumPuzzle 2

Puzzle IconAt a recent visit to the reptile house at the local zoo, I counted a total of 27 heads and 70 feet.

I was counting snakes, lizards and people and I know that there were exactly twice as many lizards as people.

How many snakes did I count?

[Ref: ZLHO] Copyright © Kevin Stone

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Direct Link: www.brainbashers.com?ZLHO


Difficulty: MediumPuzzle 3

Puzzle IconA friend of mine drove from Aardvark to Beeville.

On the first day they travelled 1/3 of the distance.

On day two they travelled 1/2 of the remaining distance.

On day three they travelled 2/3 of the remaining distance.

On day four, after covering 3/4 of the remaining distance, they were still 5 miles away from Beeville.

How many miles had they covered so far?

[Ref: ZNKP] Copyright © Kevin Stone

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Difficulty: MediumPuzzle 4

Puzzle IconImagine a grid comprising 20 X 20 squares.

How many squares, of any size, in total?

[Ref: ZOIV]

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Direct Link: www.brainbashers.com?ZOIV

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