Informational Site NetworkInformational Site Network
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 del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK




Random Questions

Digital Square Numbers.
Money Puzzles
The Carpenter's Puzzle
CANTERBURY PUZZLES
The Puzzle Of The Doctor Of Physic
CANTERBURY PUZZLES
The Level Puzzle.
Unicursal and Route Problems
The Queen's Journey.
The Guarded Chessboard
The Cone Puzzle.
Patchwork Puzzles
The Thirty-one Game
MISCELLANEOUS PUZZLES
The Chifu-chemulpo Puzzle
MISCELLANEOUS PUZZLES
The Fifteen Dominoes.
Combination and Group Problems
A Calendar Puzzle.
Unclassified Problems.
The Two Trains.
Money Puzzles
Wilson's Poser.
Money Puzzles
"strand" Patience.
Problems Concerning Games.
A Printer's Error.
Money Puzzles
Find Ada's Surname.
Money Puzzles