 | Miles Bland - 1824 - 404 sider
...first of which is to the second as the second to the third ; the «umber itself is to the sum of ils digits as 124 to 7; and if 594 be added to it, the digits will be inverted. Required the number. Let the digits be represented by x, xy, rys ; then 100J+ I0xy + xy* : x+xy+xy3... | |
 | Enoch Lewis - 1826 - 180 sider
...is a number consisting of three digits in geometrical progression; the number itself, is to the sum of its digits, as 124 to 7; and if 594 be added to it, the order of the digits will be inverted; what is the number? Ans. 248. • Promiscuous examples to exercise... | |
 | John Darby (teacher of mathematics.) - 1829 - 212 sider
...progression, the first of which is to the second as the second to the third, the number itself is to the sum of its digits as 124 to 7, and if 594 be added to it, the digits will be inverted. Required the number. Let x = the first digit, or that in the hundredth's place, and y = the ratio ;... | |
 | 1834 - 182 sider
...consisting of 3 digits in geometrical progression; the number is to the sum of its digits :: 124 : 7, and if 594 be added to it, the digits will be inverted. What is it ? Answer, 248. 53. A certain number when expressed in the scale of r consists of two digits; and,... | |
 | Richard W. Green - 1839 - 156 sider
...number, consisting of two places of figures, which is equal to 4 times the sum of its digits ; and if 18 be added to it, the digits will be inverted. What is that number 1 Let x= first digit or tens ; and y= the units. 10a;+y= the number. 4a;+4y= four times the sum of... | |
 | Miles Bland - 1841 - 456 sider
...digits, the first of which is to the second as the second to the third; the number itself is to the sum of its digits as 124 to 7 ; and if 594 be added to it, the digits will be inverted. Required the number. Let the digits be represented by x, xy, xy' ; then 100# + 1oxy + xy' : x + xy... | |
 | Alfred Wrigley - 1845 - 222 sider
...number consisting of 3 digits in geometrical progression; the number is to the sum of its digits =124 : 7; and if 594 be added to it, the digits will be inverted: find the number. 869. If the number expressed by the last n digits of a number be divisible by 2м,... | |
 | Samuel Alsop - 1846 - 300 sider
...yards. Ex. 17. A certain number consisting of three digits in geometrical progression, is to the sum of its digits as 124 to 7 : and if 594 be added to it, the digits will be inverted. Required the number. Ans. 248. Ex. 18. A sets out from Philadelphia to travel east, at the rate of... | |
 | Samuel Alsop - 1848 - 336 sider
...yards. Ex. 17. A certain number consisting of three digits in geometrical progression, is to the sum of its digits as 124 to 7 : and if 594 be added to it, the digits will be inverted. Required the number. Ans. 248. * .' * * . ' Ex. 18. A sets out from Philadelphia to travel east, at... | |
 | John Bonnycastle - 1851 - 288 sider
...digits, the first of which is to the second as the second to the third ; the number itself is to the sum of its digits, as 124 to 7 ; and if 594 be added to it, the digits will be inverted. What is the number 1 Ans.248. 21. There are three numbers in arithmetical progression, and the square of the... | |
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There is a number consisting of three digits, the first of which is to the second as the second is to the third; the number itself is to the sum of its digits as 124 to 7; and if 594 be added to it the digits will be inverted. What is the number ? equal... 
