 | Bewick Bridge - 1818 - 254 σελίδες
...number required. QUESTION lu. There Js a certain number, consisting of two digits. The sum of those digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. What is the number ? Let x= left-hand digit. y=right-hand digit. Then by Art. 63. 10x + i/=the number itself, and 10y... | |
 | Adrien Marie Legendre - 1819 - 574 σελίδες
...body weighs as much as his head and tail : what is the whole weight of the fish 2 .'lus. 721 bs. 60. There is a certain number, consisting of two digits, the sum of which digits is 5 ; and if 9 be added to the number itself the digits will be inverted : what is the... | |
 | Bewick Bridge - 1821 - 284 σελίδες
...x3' °Г Т = 27'. Divide by x*, then 27 =4 x, 27 and ж=— =6j, the number required. QUESTION 16. There is a certain number, consisting of two digits. The sum of those digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. What is the... | |
 | James Ryan - 1824 - 550 σελίδες
...From equation (B), £=2y+4=2Xl4+4, by substitution, .'. a: = 32, the shillings in his pocket. Prob. 6. There is a certain number, consisting of two digits. The sum of Ihose digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. What is the... | |
 | James Ryan, Robert Adrain - 1824 - 542 σελίδες
...equation (B), a: = 2j/ + 4=2Xl4+4, by substitution, .-. a; = 32, the shillings in his pocket. Trob. 6. There is a certain number, consisting of two digits. The sum of those digits is 5; and if 9 be added to the number itself, the digits will be inverted. What is the... | |
 | Silvestre François Lacroix - 1825 - 394 σελίδες
...three equal parts the continued product of the parts shall be equal to the same quantity. Aw. 6£. 136. There is a certain number, consisting of two digits....digits will be inverted. What is the number ? Ans. 23. 137. What number is that, to which if I add 20 and from | of this sum I subtract 12, tlie remainder... | |
 | Silvestre François Lacroix - 1825 - 404 σελίδες
...equal parts the continued product of the parts shall be equal to the same quantity. .4ns. 6|. 136. There is a certain number, consisting of two digits....itself the digits will be inverted. What is the number ? An'. 23. 137. What number is that, to which if I add 20 and from § of this sum I subtract 12, the... | |
 | Adrien Marie Legendre - 1825 - 570 σελίδες
...of the fish ? Ans. 72 Ibs. 60. There is a certain number, consisting of two digits, the sum of which digits is 5 ; and if 9 be added to the number itself...digits will be inverted ; what is the number? Ans. 23. 61. A person found, upon beginning the study of his profession, that ,}• of his life hitherto had... | |
 | Silvestre François Lacroix - 1825 - 324 σελίδες
...of the fish ? Ans. 72 Ibs. 60. There is a certain number, consisting of two digits, the sum of which digits is 5 ; and if 9 be added to the number itself...digits will be inverted : what is the number ? Ans. 23. 61. A person found, upon beginning the study of his profession, that | of his life hitherto had passed... | |
 | Silvestre François Lacroix - 1825 - 294 σελίδες
...body weighs as much as his head and tail : what is the whole weight of the fish ? Ans. 72 Ibs. 60. There is a certain number, consisting of two digits, the sum of which digits is 5; and if 9 be added to the number itself the digits will be inverted; what is the... | |
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There is a certain number, consisting of two digits, the sum of which digits is 5 ; and if 9 be added to the number itself the digits will be inverted ; what is the number? 
