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" ... subtract that sum from the number of nines. Let another person add that difference to the largest number, and taking away the first figure of the amount, add it to the last figure, and that sum will be the difference of the two numbers. "
Rational Amusement for Winter Evenings, Or, A Collection of Above 200 ... - Σελίδα 65
των John Jackson (Private teacher of the mathematics.) - 1821 - 118 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

Rational Recreations: In which the Principles of Numbers and ..., Τόμος 1

William Hooper (M.D.) - 1783 - 328 σελίδες
...Matthew, who is 22, tells Henry, who is older, that he can difcover the difference of their ages j he therefore privately deducts 22 from 99, and the...tells Henry to add to his age, and to take away the firft figure from the amount, and add it to the laft figure, and that laft fum will be the difference...

Philosophical Recreations, Or, Winter Amusements: A Collection of ...

John Badcock - 1820 - 222 σελίδες
...will be the difference of the two numbers, as required. For example, Roger, who is 22, tells George, who is older, that he can discover the difference...from 99, and the difference, which is 77, he tells George to add to his age, and to take away the first figure from the amount. Then, if this figure,...

The boy's holyday book. [Another]

Boy - 1845 - 300 σελίδες
...and that sum will be the difference of the two numbers. For example, Robert, who is 22, tells George, who is older, that he can discover the difference...from 99, and the difference, which is 77, he tells George to add to his age, and to take away the first figure from the amount, and add it to the last...

Facts and Hints for Every-day Life: A Book for the Household ...

A. H. W., Facts - 1873 - 478 σελίδες
...22, tells Mr. Smith, who is older, that he can discover the difference of their ages without knowing. He therefore privately deducts 22 from 99, and the...difference, which is 77, he tells Henry to add to his age. When he has done this, Jones tells him to take away the first figure from the amount, and add it to...

Encyclopedia of Natural and Artificial Wonders and Curiosities ..., Τόμος 11

John Platts - 1876 - 986 σελίδες
...is older, that he can discover th*. difference of their ages. He privately deducts 22, his own age, from 99, and the difference, which is 77, he tells...and to take away the first figure from the amount. Then if this figure, so taken away, be added to the remaining ones, the sum will be the difference...

The Family friend [ed. by R.K. Philp]., Τόμος 1

Robert Kemp Philp - 428 σελίδες
...difference of the two numbers. For example : John, who is 22, tells Thomas, who is older, that he ean discover the difference of their ages; he therefore privately deducts 22 from 99 (his age consisting of two figures, he of course takes two nines) ; the difference, which is 77, he...

Endless amusement; a collection of entertaining experiments in various ...

Endless amusement - 1820 - 232 σελίδες
...and that sum will be the difference of the two numbers. For example, Robert, who is 22, tells George, who is older, that he can discover the difference...privately deducts 22 from 99, and the difference, winch is 77, he tells George to add to hi» age, and to take away the first figure from the amount,...




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