 | Mathematics - 1850 - 318 pages
...Gentleman's Diary, 1850; " Query 6. Fifteen young ladies in a school walk out three abreast for seven days in succession : it is required to arrange them daily, so that no two shall walk twice abreast ;" which I should hardly deem worthy of mention in these pages, if it were... | |
 | John Radford Young - 1855 - 218 pages
...formed of 96 things out of 100 ? (4) Fifteen young ladies at a school walk out three a-breast for seven days in succession : it is required to arrange them daily so that no two shall walk a-bieast twice. The number of combinations that can be formed with 2 out of 15, is Consequently,... | |
 | 1867 - 120 pages
...cones qui font partie d'un faisceau de surfaces du second ordre. 2255. (Proposed by M. GARDINER.) — If all the sides but one of a variable polygon inscribed...sides be divided into triangles by diagonals, (1) when tho polygons are convex, (2) when some of the angles are re-entrant ? 2281. (Proposed by WK CLIFFORD,... | |
 | 1868 - 120 pages
...= -. 2261. (Proposed by S. BILLS.)— Sixty-three school-boys walk out three abreast for thirty-one days in succession ; it is required to arrange them...daily so that no two of them shall walk twice abreast. Solution by WSB WOOLHOUSE, FRAS Let the sixty- three school-boys be denoted by A; 1, (1) ; 2, (2);... | |
 | Alexander Macfarlane - Physicists - 1916 - 162 pages
...fifteen schoolgirls as follows: " Fifteen young ladies of a school walk out three abreast for seven days in succession; it is required to arrange them daily so that no two shall walk abreast more than once." To form the schedules for seven days is not difficult; but to find... | |
 | Alexander Macfarlane - Mathematicians - 1916 - 164 pages
...fifteen schoolgirls as follows: " Fifteen young ladies of a school walk out three abreast for seven days in succession; it is required to arrange them daily so that no two shall walk abreast more than once." To form the schedules for seven days is not difficult; but to find... | |
 | Mathematicians - 1925 - 576 pages
...Gentleman's Diary for 1850, p. 48: "Fifteen young ladies in a school walk out thrice abreast for seven days in succession; it is required to arrange them daily, so that no two shall walk twice abreast." An account of this problem and some references to the literature are given... | |
 | Physics - 1861 - 1188 pages
...Gentleman's Diary' for 1850: — Fifteen young ladies in a school walk out three abreast for seven days in succession : it is required to arrange them daily so that no two shall walk twice abreast. Two solutions, one of them by the talented proposer, were printed in the... | |
 | W.D. Wallis - Mathematics - 1988 - 348 pages
...by the Reverend Kirkman in 1850: "Fifteen young ladies in a school walk out three abreast for seven days in succession: it is required to arrange them daily, so that no two shall walk twice abreast." In Section 6. 4 a parallel class of blocks in a design was defined to be... | |
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Fifteen young ladies in a school walk out three abreast for seven days in succession : it is required to arrange them daily, so that no two shall walk twice abreast... 
