 | Arthur Schultze - Algebra - 1918 - 336 pages
...inches. Find the radii. (Surface of sphere 17. If a number of two digits be divided by the product of its digits, the quotient is 2, and if 27 be added to the number, the digits will be interchanged. Find the number. CHAPTER XX PROGRESSIONS 307. A series is a succession of numbers formed... | |
 | John Henry Walsh - Algebra - 1911 - 234 pages
...4- y = number, and x + Wy = number inverted. 22. The sum of the two digits composing a number is 11, and if 27 be added to the number the digits will be inverted. Find the number. 23. A number of two digits is equal to 7 times the sum of the digits, and when 18... | |
 | Carroll E. Izard, Jerome Kagan, Robert B. Zajonc - Medical - 1984 - 636 pages
...said to have engaged in rich and peculiar motor activity in the course of his rapid calculations.5 " 'What number is that which, being divided by the product of its digits, the quotient is 3; and if 18 be added, the digits will be inverted?' He flew out of his chair,... | |
 | Charles Davies - Algebra - 1891 - 312 pages
...6, that the sum of the numbers shall be 33, and the sum of their squares 467. Ans. 5, 9, and 19. 19. What number is that which being divided by the product of its two. digits the quotient will be 3, and if 18 be added to it the resulting number will be expressed by the digits inverted ?... | |
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What number is that, which, being divided by the product of its digits, the quotient is 3 ; and if 18 be added to it, the digits will be inverted ? Ans. 
