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Mathematical Puzzles


Difficulty: EasyPuzzle 1

Puzzle IconThree countrymen met at a cattle market. "Look here," said Hodge to Jakes, "I'll give you six of my pigs for one of your horses, and then you'll have twice as many animals here as I've got."

"If that's your way of doing business," said Durrant to Hodge, "I'll give you fourteen of my sheep for a horse, and then you'll have three times as many animals as I."

"Well, I'll go better than that," said Jakes to Durrant; "I'll give you four cows for a horse, and then you'll have six times as many animals as I've got here."

No doubt this was a very primitive way of bartering animals, but it is an interesting little puzzle to discover just how many animals Jakes, Hodge, and Durrant must have taken to the cattle market.

[Ref: ZUCK] At A Cattle Market. Amusements In Mathematics by Henry Ernest Dudeney (1917).

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Direct Link: www.brainbashers.com?ZUCK


Difficulty: MediumPuzzle 2

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?

Puzzle Image

[Ref: ZVZB] © Kevin Stone

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Direct Link: www.brainbashers.com?ZVZB


Difficulty: EasyPuzzle 3

Puzzle IconWhich of these is correct:

Six and six IS eleven or six and six ARE eleven?

[Ref: ZYTW]

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Direct Link: www.brainbashers.com?ZYTW


Difficulty: EasyPuzzle 4

Puzzle IconMy current age, is the age of my brother (who is 14), plus one third of my age.

How old will I be when my brother is twice his current age?

[Ref: ZNTH] © Kevin Stone

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Direct Link: www.brainbashers.com?ZNTH

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