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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He replied that he could not, but he recollected that the hour hand and minute hand were exactly together, one above the other, and the second hand had just passed the forty-ninth second. The men were rather more extravagant than their wives, for Ned Smith spent as much as his wife, Tom Brown twice as much as his wife, Bill Jones three times as much as his wife, and Jack Robinson four times as much as his wife.

Now, assuming his averages to have held good in every case, how was his company made up on that occasion? How many chestnuts should the buyer receive for half a crown? A clock hangs on the wall of a railway station, 71 ft.

They had agreed that whenever a player won a game he should double the money of each of the other players—that is, he was to give the players just as much money as they had already in their pockets. After arriving at Butterford I found that I had gone thirty-five miles.

Now, the four 6’s added together make 24, and the figures in 15, also add to Download or read it online for free here: Amusements in Mathematics by Henry Ernest Dudeney.

Did he make a profit on the whole transaction, or a loss?

It was recently submitted to a Sydney hendy newspaper that indulges in “intellect sharpeners,” but was rejected with the remark that it is childish and that they only published problems capable of solution!

He had discovered for himself a fact that is well known to mathematicians that if he took all the blocks contained in any number of heaps in regular order, beginning with the single cube, he could always arrange those on the ground so as to form a perfect square.


It is supposed by those who have investigated the matter that the ancient Chinese philosophers used these Pg 28 puzzles as a sort of kindergarten method of imparting the principles of geometry.

This is a pretty little property of numbers. Of course the answer must be given without looking at the coins. The second hand, which travels once round the face in a minute, is the one with the little ring at its end near the centre. I have nine counters, each bearing one of the nine digits, 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Download link multiple formats. After losing their first child at the age of four months inthe Dudeneys had one daughter, Margery Janet — This got accidentally torn in half, so that 3 0 was on one piece and 2 5 on the other, as shown on the illustration. What are the three distances between these villages, each being a whole number of miles? Amazon Renewed Refurbished products with a warranty. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition.

The three men sighed and looked anxiously at one another.

Amusements in Mathematics

When the big flaming placards were exhibited at the little provincial railway station, announcing that the Great —— Company would qmusements cheap excursion trains to London for the Christmas holidays, the inhabitants of Mudley-cum-Turmits were in quite a flutter of excitement.

Every juvenile reader will see at a glance that his example is quite correct.

You can remove the unavailable item s now or we’ll automatically remove it at Checkout. It is pretty evident that the countryman was not mathematicz a fool as he looked. Fractions are not allowed, and I shall show that no number need contain more than two figures.

Also, can he find the pairs of smallest possible numbers in each case?

Amusements in Mathematics by Henry Ernest Dudeney – Download link

Thanks for telling us about the problem. They were just thinking the fray was over when David suddenly struck out in two directions at once, upsetting three-quarters of what Bob and Andrew had last acquired. Waterson took up the poker to attend to the fire. They were of unequal sizes, as will be seen in the illustration, and when the time arrived for Pg 24 payment a dispute arose as to whether the agreement was based on lineal or cubical measurement.

Amusements in Mathematics (Classic Reprint)

Smith spent most of all. How to write a great review Do Say what you liked best and least Describe the author’s style Explain the rating you gave Don’t Use rude and profane language Include any inn information Mention spoilers or the book’s price Recap the plot. I have a set of four dice, not marked with spots in the ordinary way, but with Arabic figures, as shown in the illustration.


Tim Murphy and Pat Donovan were engaged by the local authorities to paint the lamp-posts in a certain street. What is the largest sum of money—all in current silver coins and no four-shilling piece—that I could have in my pocket without being able to give change for a half-sovereign? The analogous series for triangular numbers is 1, 3, 6, 1, 6, 3, 1, 9, 9. These are strung on wires like buttons. Amazon Second Chance Pass it on, trade it in, give it a second life.

Well, it does not matter. 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.

In these days, when we have a growing lack of respect for pedigrees, most people have got out of the habit of rapidly drawing such tables, which is to be regretted, as they would save a lot of time and brain racking on occasions. Even the person with no geometrical knowledge whatever is induced after the inspection of such things to exclaim, “How very pretty!

Amusements in Mathematics by Henry Ernest Dudeney – Free Ebook

Board and Table Games from Many Civilizations. If you are not very careful, you are likely to get a good deal out in your calculation. There is perhaps no class of puzzle over which people so frequently blunder as that which involves what is called the theory of probabilities.

Can you get at the answer in any other way? Remember both groups must multiply to the same amount, and there must be three counters multiplied by two in one case, and two multiplied by two counters in the hrnry, just as at present.