VIEW THE MOBILE VERSION of www.mathpuzzle.ca Informational Site Network Informational
Privacy
Home Top Rated Puzzles Most Viewed Puzzles All Puzzle Questions Random Puzzle Question Search


THE FOUR SEVENS.





(Money Puzzles)
In the illustration Professor Rackbrane is seen demonstrating one of the
little posers with which he is accustomed to entertain his class. He
believes that by taking his pupils off the beaten tracks he is the
better able to secure their attention, and to induce original and
ingenious methods of thought. He has, it will be seen, just shown how
four 5's may be written with simple arithmetical signs so as to
represent 100. Every juvenile reader will see at a glance that his
example is quite correct. Now, what he wants you to do is this: Arrange
four 7's (neither more nor less) with arithmetical signs so that they
shall represent 100. If he had said we were to use four 9's we might at
once have written 99+9/9, but the four 7's call for rather more
ingenuity. Can you discover the little trick?


Read Answer






Next: THE DICE NUMBERS.

Previous: THE DIGITAL CENTURY.



Add to Informational Site Network
Report
Privacy
ADD TO EBOOK




Random Questions

The Nine Counters.
Money Puzzles
The Table-top And Stools.
Various Dissection Puzzles
The Franklin's Puzzle
CANTERBURY PUZZLES
The Scientific Skater.
The Guarded Chessboard
The Tapiser's Puzzle
CANTERBURY PUZZLES
The Passenger's Fare.
Money Puzzles
The Crowded Chessboard.
Chessboard Problems
Farmer Wurzel's Estate.
Patchwork Puzzles
The Cook's Puzzle
CANTERBURY PUZZLES
A New Counter Puzzle.
The Guarded Chessboard
Boards With An Odd Number Of Squares.
Chessboard Problems
Average Speed.
Money Puzzles
Captain Longbow And The Bears
MISCELLANEOUS PUZZLES
The "t" Card Puzzle.
Problems Concerning Games.
Drawing Her Pension.
Money Puzzles