AMUSEMENTS IN MATHEMATICS HENRY ERNEST DUDENEY. AUTHOR OF IN issuing this new volume of my Mathematical Puzzles, of which some have. Henry Ernest Dudeney (10 April – 23 April ) was an English author and mathematician who specialised in logic puzzles and mathematical games. He is known as one of the country’s foremost creators of mathematical . The Canterbury Puzzles (); Amusements in Mathematics (); The World’s Best Word. Amusements in Mathematics (Dover Recreational Math) [Henry E. Dudeney] on *FREE* shipping on qualifying offers. The legion of H. E. Dudeney .

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Amusements in Mathematics Classic Reprint. Of course, you must not alter the present numerical arrangement of the figures. It was not until dudneey middle of the nineteenth century that we found that the cross might be transformed into a square in only four pieces. Parson, hengy will like to dudenney out the little sum for yourself.

How long were the candles burning? The puzzle is to give each child an equal distribution of apples. This will exhibit a great variety of curious transpositions, and, by having the solutions as we go along, the reader will be saved the trouble of perpetually turning to another part of the book, and will have everything under his eye.

The Manhattan Gas CompanyIllustrated. The nought is not allowed anywhere.

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Certain numbers are called triangular, bh if they are taken to represent counters or coins they may be laid out on the table so as to form triangles.


What is the smallest possible number of men there could have been? And how many would there be of each kind? On the question of Mathematical Puzzles in general there is, perhaps, little more to be said than I have written elsewhere.

Then, again, some numbers will form both one and two triangles as 6others both one and three triangles as 3 and 10others both two and three triangles as 7 and 9while some numbers like 21 will form one, two, or three triangles, as we desire. I find that made them cost just a penny a dozen less than the first erneat he asked. One of the members proposed to some of mathemafics friends that they should tell him the exact time when dudeneu the clock had not Pg 11 stopped the second hand would next again have been midway between the minute hand and the hour hand.

For example, 1 3 4 5 8 divided by 6 7 2 9 gives 2. He sold a quantity of the wine to one man and twice the quantity to another, but kept the beer to himself.

Gas and Gas Making: There are three other ways of arranging the digits so as to produce the same result. At the time of the publication in the Weekly Dispatchinof a method of cutting an equilateral triangle into four parts that will form a square see No.

As the purchase of apples in small quantities has always presented considerable difficulties, I think it well to offer a few remarks on this subject. Here is an amusing little case of marketing which, although it deals with a good many items of money, leads up to a question of a totally different character.

Amusements in Mathematics (Classic Reprint) : Henry Ernest Dudeney :

Now, how long will it take the reader to say correctly just how much Fred paid for his rare and refreshing fruit? There is perhaps no class of puzzle over which people so frequently blunder as that which involves what is called the theory of probabilities.


That said, I totally love these puzzles, particularly the ones involving Brittish currency–they add a degree of difficulty that stretches me to the max–and yet you can always move on to the next one and try again. Certain things are antecedently assumed, and the answer depends entirely on the truth of those assumptions.

The Flower and the Leaf.

Amusements in Mathematics (Classic Reprint)

The boxes were all given to them on the same day, and they at once put what money mathemaics had into them; only, as the boxes were not very large, they first changed the money into as few coins as possible. Such a time, of course, cannot be really indicated.

In how many different ways may nineteen shillings and ninepence be paid in our current coin? Here the joins at a and f may be as slender as you like.

Here is an easy problem for the novice. Can you get at the answer in any other way? Can you place four digits in the manner shown, so that it will be equally correct if the printer sets it up aright or makes the same blunder?