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" There is a certain number, to the sum of whose digits if you add 7, the result will be three times the left-hand digit ; and if from the number itself you subtract 18, the digits will be inverted. What is the number ? ANSW. "
An Elementary Treatise on Algebra - Side 88
av Bewick Bridge - 1818 - 227 sider
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An Elementary Treatise on Algebra: Theoretical and Practical

James Ryan - 1824 - 550 sider
...from i the greater, the remainder is nothing. What arc the numbers ? « Ans. 18, and .12. Prob. 31. There is a certain number, to the sum of whose digits...the digits will be inverted. What is the number?- • , • ADS. 53. Prob. 32. A person has two horses, and a saddle worth 101. ; if the saddle be put...
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An Elementary Treatise on Algebra: Theoretical and Practical

James Ryan, Robert Adrain - 1824 - 542 sider
...taken from J- the greater, the remainder is nothing. What are the numbers ? Ans. 18, and 12. Prob. 31. There is a certain number, to the sum of whose digits if you add 7, the result will be three limes the left-hand digit ; and if from the number itself you subtract 10, the digits will be inverted....
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 1046 sider
...value triple that of the first ; what is the value of each none ? Ant. One 301. and the other 401. 37. There is a certain number, to the sum of whose digits...digit ; and if from the number itself you subtract 1 8, the digits will be inverted ; what is the number ? Ans, 53. 38. A vessel, containing 120 gallons,...
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A Treatise on the Elements of Algebra

Bewick Bridge - 1828 - 260 sider
...numbers, such, that £ the greater added to ;}d the lesser is 1 3 ; and if -| the lesser be taken from Jd the greater, the remainder is nothing. What are the...digit ; and if from the number itself you subtract 1 8, the digits will be inverted. What is the number ? ANSW. 53. Qu. 33. Divide the number 90 into...
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An Elementary Treatise on Algebra: Theoretical and Practical ...

James Ryan - 1826 - 430 sider
...taken from | the greater, the remainder is nothing. What are the numbers? Ans. 18, and 12. Prob. 31. There is a certain number, to the sum of whose digits...number itself you subtract 18, the digits will be invented. What is the number ? Ans. 53. Prob. 32. A person has two horses, and a saddle worth \0l ;...
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An Elementary Treatise on Algebra, Theoretical and Practical ...

James Ryan, Robert Adrain - 1835 - 388 sider
...taken from £ the greater, the remainder is nothing. What are the numbers ? Ans. 18, and 12. PROB. 31. There is a certain number, to the sum of whose digits...will be three times the left-hand digit ; and if from I he number itself you subtract 18, the digits will be inverted. What is the number? Ans. 53. PROB....
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A Treatise on the Elements of Algebra

Bewick Bridge - 1839 - 280 sider
...lesser is 13 ; and if i the lesser be taken from |d the the greater, the remainder is nothing. What ars the numbers ? ANSW. 18 and 12. Qu. 32. There is a...sum of whose digits if you add 7, the result will be 3 times the left hand digit ; and if from the number itself you subtract 18, the digits will be inverted....
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A Treatise on the Elements of Algebra

Bewick Bridge - 1841 - 260 sider
...such, that £ the greater added to £d the lesser is 13 ; and if $ the lesser be taken from id the the greater, the remainder is nothing. What are the...sum of whose digits if you add 7, the result will be 3 times the left hand digit ; and if from the number itself you subtract 18, the digits will be inverted....
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Arithmetic and Algebra in Their Principles and Application ...

Barnard Smith - 1857 - 740 sider
...13 ; and if J the less be taken from J the greater, the remainder is nothing; find the numbers. 6. There is a certain number, to the sum of whose digits...itself you subtract 18, the digits will be inverted. Find the number. 7. A vessel containing 120 gallons is filled in 10 minutes by 2 spouts running successively,...
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The Complete Algebra: Embracing Simple and Quadratic Equations, Proportion ...

Edward Olney - 1877 - 466 sider
...value is ^; but if 1 be added to its denominator, its value is J. What is the fraction ? Verify. « 7. There is a certain number, to the sum of whose digits if you add 7, the result will be three times the left hand digit ; and if from the number itself you subtract 18, the digits will have changed places....
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