["","","","","","","","","","","","","","","Class - 8 One more problem: 61u81 = \u00a7 6 \u000e 1 \u00b7 u \u00a8\u00a7\u00a98 \u000e 1 \u00b7 \u00a8\u00a9 2 \u00b8\u00b9 3 \u00b8\u00b9 23 = \u000b6 u 8\f \u000e \u00a7 6 u 1 \u00b7 \u000e \u00a71 u 8 \u00b7 \u000e \u00a71 u 1 \u00b7 \u00a8\u00a9 3 \u00b9\u00b8 \u00a9\u00a8 2 \u00b8\u00b9 \u00a9\u00a8 2 3 \u00b8\u00b9 = 48 + 2 + 4 + 1 6 = 54 1 6 Let\u0092s look at another thing. We have seen in class 7, several interesting connections between sum of numbers of a calendar. (the section, Cal- endar math and Another trick of the lesson, Unchanging Relations). Now let\u0092s see something about their products. In the calender for any month, mark four numbers in a square: Sunday Monday Tuesday Wednesday Thursday Friday Saturday 5 1 234 12 6 7 8 9 10 11 19 13 14 15 16 17 18 26 20 21 22 23 24 25 27 28 29 30 31 Multiply the diagonal pairs: 14 u 6 = 84 13 u 7 = 91 Their difference is 91 \u0010 84 = 7 Now take another four numbers in a square and do this : 22 u 30 = 660 23 u 29 = 667 667\u0010 660 = 7 \u008f Identities 65","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""]
Search
