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Magic Triangle 3X
Magic Triangle 3X
The six numbers from 1 to 6 have to be placed along the sides of a triangle so that to create some magic sum along each of its sides. What magic sums can be there?
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The 26 Puzzle Re_Solution
The 26 Puzzle Re_Solution
after Professor Louis Hoffman
A sequel to The "Twenty-Six" Puzzle. Numbers 1 through 12 and the magic sum of 26 remain, but the seven areas have changed. Will it be harder than the prequel?
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Twenty4 Puzzle
Twenty4 Puzzle
by Wei-Hwa Huang
It is quite easy to get 24 from an 8 and a 3 - just multiply them together. But discover how incredibly hard this task can be when you have two 8s and two 3s.
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Sum-One
Sum-One
The sum of four ONEs, of course, isn't TEN. That's why the real goal for this calculation is to discover which numbers are hidden behind those words.
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The "Twenty-Six" Puzzle
The "Twenty-Six" Puzzle
after Professor Louis Hoffman
It's a kind of magic square, and you have to place twelve different numbers all around it so that seven regions with the magic sum of twenty six appear.
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Send More Money
Send More Money
by Henry E. Dudeney
Of course, this isn't our appeal! We just want to propose you this great classic cryptarithm that will improve your ability to calculate.
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Six Numbers
Six Numbers
by Martin Gardner
Solving this puzzle you can circle with a feeling that you're one step before your goal or... one step behind. Is there any kind of joke to get exactly on it?
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The Number Grid Puzzle
The Number Grid Puzzle
Don't let the adjacent digits be... adjacent. The eight digits are known, a simple grid is drawn and the systematic approach is recommended.
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The Eight Cards
The Eight Cards
by Henry E. Dudeney
A true classic gem passed through the time. Despite the fact you need just simple arithmetic skills to get to the solution, it will make you be thinking slightly out of the box.
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A Simple Cryptarithm
A Simple Cryptarithm
by Henry E. Dudeney
A "cryptarithm" stands for a puzzle where you have to reveal the hidden numbers to make some calculations correct. Try this simple classic one.
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Puzzles with Numbers
 
Last Updated: February 28, 2009 top
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Numbers 12 - PDF Print ‘n’ Play Collection
 
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